Intel Core i9 7900X Review | 78 Data compared

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  • Avg. price: ~£320
  • PassMark benchmark result: 20883
  • N. of physical cores: 10
  • CPU boost clock speed: 4.5 GHz

Intel Core i9 7900X review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

5.7

Overall score

What it is: An overall evaluation of the processor's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best processors on the market.

Score components:

90.0%

5.4

Technical Score

10.0%

7.7

User score

Good
5.4

Technical Score

What it is: An assessment of the processor's technical performance, covering key areas such as processing performance, core configuration, efficiency, platform support, integrated features, and thermal behavior.

When it matters: When you want to compare processors based on technical performance and available features.

Score components:

60.0%

5.2

Performance

18.0%

6.0

Cache & Architecture

10.0%

7.1

Memory & PCIe

7.0%

3.0

Power & Thermal

4.0%

7.5

Platform

1.0%

2.8

Integrated Graphics

Good
7.7

User score

What it is: A rating that combines user reviews and the total number of reviews received by the processor.

When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.

Score components:

70.0%

8.6

User reviews

30.0%

5.4

Popularity

User score:
United Kingdom
amazon
4.3
(86)
amazon
5.0
(1)

(Reviews last updated: May 2026)

Very good
  • 4.3
    Gaming

    Score components:

    30.0%

    4.2

    PassMark single-core benchmark score

    25.0%

    4.0

    Geekbench 6 single-core benchmark score

    20.0%

    6.1

    CPU boost clock speed

    17.0%

    2.9

    L3 cache

    8.0%

    4.3

    N. of physical cores

  • 4.5
    Video editing

    Score components:

    45.0%

    4.3

    Geekbench 6 multi-core benchmark score

    20.0%

    4.3

    N. of physical cores

    20.0%

    6.4

    CPU threads

    15.0%

    2.9

    L3 cache

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Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Intel Core i9-7900X is a high-performance Skylake-X enthusiast processor featuring 10 cores and 20 threads with a 3.3 GHz base clock and a 4.5 GHz Max Turbo 3.0 frequency. Built on a 14nm process for the LGA 2066 socket, it offers 44 PCIe lanes, 13.75MB of L3 cache, and quad-channel DDR4-2666 memory support with a 140W TDP. Its main strengths include exceptional multi-threaded performance for workstation tasks like video encoding and 3D rendering, significant IPC gains over previous generations, and high overclocking headroom. However, the processor is known for extremely high power consumption under load, high operating temperatures due to the use of thermal paste instead of solder under the heat spreader, and the requirement for an expensive X299 motherboard.

Technical Specifications of processor Intel Core i9 7900X

Technical Score

What it is: An assessment of the processor's technical performance, covering key areas such as processing performance, core configuration, efficiency, platform support, integrated features, and thermal behavior.

When it matters: When you want to compare processors based on technical performance and available features.

Score components:

60.0%

5.2

Performance

18.0%

6.0

Cache & Architecture

10.0%

7.1

Memory & PCIe

7.0%

3.0

Power & Thermal

4.0%

7.5

Platform

1.0%

2.8

Integrated Graphics

5.4
Intel Core i9 7900X has a technical score of 5.43 points, which is higher than that of 54.1% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the processor.

When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.

Score components:

70.0%

8.6

User reviews

30.0%

5.4

Popularity

User score:
United Kingdom
amazon
4.3
(86)
amazon
5.0
(1)

(Reviews last updated: May 2026)

7.7
Intel Core i9 7900X has a user score of 7.65 points, which is lower than that of 88.3% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the processor.
When it matters: When you prefer to choose a processor reviewed and selected by many other buyers.
5.4
Intel Core i9 7900X has a popularity of 5.4 points, which is higher than 83.3% of products in this category.
Ratio quality/price

What it is: An indicator that combines the processor's overall rating with its cost.

When it matters: When you are looking for a processor with a good balance between performance, efficiency, and price.

Score components:

60.0%

5.7

Overall score

40.0%

8.8

Price

6.6
Intel Core i9 7900X has a quality-to-price ratio of 6.6 points, which is higher than 57.6% of products in this category.
Brand name
What it is: The manufacturer or brand of the product.
When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

Intel
Processor type
What it is: The kind of system the processor is built for, such as desktop PCs, laptops, workstations, or servers.
When it matters: When you want a processor meant for the kind of machine you are actually building or buying, rather than a chip aimed at a different class of system.

Importance: HIGH

workstation
Intel Core i9 7900X belongs to the workstation processor class, which is more advanced than that of 95.1% of processors and equal to that of 4.9% of processors.
CPU socket
What it is: The physical socket the processor fits into on the motherboard.
When it matters: When you need to make sure the CPU can actually be installed on a specific motherboard.

Importance: HIGH

LGA2066
Intel Core i9 7900X uses the LGA2066 CPU socket, which is newer than that of 74.4% of processors and equal to that of 1.5% of processors.
Chipset
What it is: The motherboard chipset families officially meant to work with the processor.
When it matters: When you are checking whether a CPU will work with the motherboard features and platform you plan to use.

Importance: HIGH

X299
Intel Core i9 7900X supports X299 chipsets, which is broader compatibility than 95.3% of processors and equal to that of 1.6% of processors.
CPU architecture
What it is: The processor family or design generation behind the chip, such as Zen 4 or Raptor Lake.
When it matters: When you are comparing CPUs across generations and want a clearer sense of their design age, feature level, and expected performance class.

Importance: HIGH

x86-64
Intel Core i9 7900X uses the x86-64 architecture, which is more advanced than that of 1.7% of processors and equal to that of 98.3% of processors.
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N. of physical cores
What it is: The number of physical CPU cores on the processor.
When it matters: When you run workloads that benefit from more real cores.

Importance: HIGH

Good value: 8+

10
Intel Core i9 7900X has 10 CPU cores, which is more than 77.1% of processors and equal to 4.3% of processors.
CPU threads
What it is: The total number of processing threads the CPU can handle at once.
When it matters: When you run heavily threaded workloads or multitask a lot.

Importance: HIGH

Good value: 16+

20
Intel Core i9 7900X offers 20 CPU threads, which is more than 85.4% of processors and equal to 4.5% of processors.
Threads per core
What it is: The number of threads each physical core can handle at once.
When it matters: When you want to understand how much thread-level parallelism each core can provide in multitasking or heavily threaded work.

Importance: MEDIUM

Good value: 2

2
Intel Core i9 7900X offers 2 threads per core, which is more than 30.4% of processors and equal to 69.6% of processors.
CPU boost clock speed
What it is: The highest clock speed the processor can reach under boost conditions.
When it matters: When you care about peak speed in short bursts.

Importance: HIGH

Good value: >4.7 GHz

4.5 GHz
Intel Core i9 7900X reaches a boost clock of 4.5 GHz which is higher than that of 56.5% of processors and equal to that of 5.4% of processors.
CPU base clock speed
What it is: The processor's normal all-core starting frequency before boost behavior raises clocks temporarily.
When it matters: When you care about steadier performance in longer workloads rather than short burst speed alone.

Importance: MEDIUM

10 x 3.3 GHz
Intel Core i9 7900X has a base clock of 10x3.3 GHz which is equal to that of 100% of processors.
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Semiconductor size
What it is: The manufacturing process node used to produce the processor, usually expressed in nanometers.
When it matters: When efficiency, heat, and the relative modernity of the chip-making process matter to your comparison.

Importance: HIGH

Good value: <10 nm

14 nm
Intel Core i9 7900X uses a 14 nm process node, which is older than that of 50.8% of processors and equal to that of 33.7% of processors.
Foundry
What it is: The semiconductor manufacturer that physically fabricates the processor chip.
When it matters: When process source, manufacturing generation, or foundry differences matter to your comparison more than day-to-day performance alone.

Importance: MEDIUM

Intel 14 nm
Intel Core i9 7900X is built on the Intel 14 nm foundry process, which is less advanced than that of 55.2% of processors and equal to that of 29.3% of processors.
L3 cache
What it is: The total amount of L3 cache available on the processor.
When it matters: When you want better performance in cache-sensitive workloads and games.

Importance: MEDIUM

Good value: >=16 MB

13.75 MB
Intel Core i9 7900X has an L3 cache of 13.75 MB which is larger than that of 63.5% of processors.
L2 cache
What it is: The total amount of L2 cache available across the processor.
When it matters: When you want to compare CPU design efficiency and how much fast intermediate cache the cores have available.

Importance: MEDIUM

Good value: >=6 MB

10 MB
Intel Core i9 7900X has an L2 cache of 10 MB which is larger than that of 80.5% of processors and equal to that of 1.9% of processors.
L1 cache
What it is: The total amount of L1 cache built into the processor, which sits closest to the cores.
When it matters: When you are comparing low-level CPU design details rather than the broader performance picture buyers usually notice first.

Importance: MEDIUM

Good value: >=512 KB

640 KB
Intel Core i9 7900X has an L1 cache of 640 KB which is larger than that of 74.6% of processors and equal to that of 2.5% of processors.
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DDR memory version
What it is: The RAM generation the processor is designed to support, such as DDR4 or DDR5.
When it matters: When you need the CPU to match the kind of memory platform you want to buy or reuse.

Importance: MEDIUM

Good value: DDR5

DDR4
Intel Core i9 7900X supports DDR DDR4, which is newer than that of 26.3% of processors and equal to that of 31.7% of processors.
Maximum memory speed
What it is: The highest official memory speed supported by the processor.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=4800 MHz

2,666 MHz
Intel Core i9 7900X supports memory speeds up to 2666 MHz, which is lower than that of 55% of processors and equal to 8.1% of processors.
Max memory speed (JEDEC)
What it is: The highest official RAM speed the processor supports under standard JEDEC settings, before any memory overclocking profiles are applied.
When it matters: When officially supported stock RAM speed matters more than XMP, EXPO, or manual memory tuning.

Importance: MEDIUM

Good value: >=5600 MHz

DDR4-2666 MHz
Intel Core i9 7900X supports JEDEC memory speeds up to DDR4-2666 MHz, which is lower than that of 55.3% of processors and equal to 7.4% of processors.
Max memory speed (XMP / EXPO)
What it is: The highest memory speed supported through XMP or EXPO profiles.
When it matters: When you want faster RAM through memory profiles.

Importance: MEDIUM

Good value: >=5200 MHz

2,666 MHz
Intel Core i9 7900X supports XMP/EXPO memory speeds up to 2666 MHz, which is higher than that of 88.6% of processors and equal to 1% of processors.
Maximum memory capacity
What it is: The largest total amount of memory officially supported by the processor.
When it matters: When you plan a system with very large RAM capacity.

Importance: HIGH

Good value: >=128 GB

128 GB
Intel Core i9 7900X supports up to 128 GB of memory, which is more than 61.9% of processors and equal to 21.4% of processors.
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Integrated graphics
What it is: Includes built-in graphics, so the system can output video without a separate graphics card.
When it matters: When you want the PC to work without a dedicated GPU, or you are building an office, media, compact, or troubleshooting-friendly system.

Importance: HIGH

no
Intel Core i9 7900X does not include integrated graphics. 87.6% of processors include integrated graphics.
Integrated GPU model
What it is: The model name of the integrated graphics processor, if present.
When it matters: When you plan to use the CPU's built-in graphics.

Importance: MEDIUM

N/A
Integrated GPU execution units
What it is: The number of execution units available in the integrated graphics part of the processor.
When it matters: When you plan to rely on built-in graphics and want a better sense of its light gaming, display, or media capability.

Importance: MEDIUM

Good value: >=24

N/A
Integrated GPU base frequency
What it is: The base operating frequency of the integrated GPU.
When it matters: When integrated graphics performance matters to you.

Importance: MEDIUM

Good value: >=350 MHz

N/A
Integrated media encoders/decoders
What it is: The hardware media formats the processor can encode or decode directly.
When it matters: When you stream, edit video, or rely on hardware media acceleration.

Importance: LOW

N/A
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TDP (Thermal design power)
What it is: The rated thermal design power, which gives a general idea of cooling and power needs.
When it matters: When you choose a cooler or build in a tighter case.

Importance: HIGH

Good value: <30 W

140 W
Intel Core i9 7900X has a TDP of 140 W which is higher than that of 94.7% of processors and equal to that of 0.8% of processors.
Base power (PL1)
What it is: The sustained power target used for longer CPU loads.
When it matters: When you choose cooling and power delivery for sustained workloads.

Importance: MEDIUM

Good value: <30 W

140 W
Intel Core i9 7900X has a base power of 140 W which is higher than that of 94.7% of processors and equal to that of 0.8% of processors.
Boost power (PL2)
What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
When it matters: When you size cooling and power delivery for peak turbo behavior.

Importance: MEDIUM

Good value: <50 W

140 W
Intel Core i9 7900X has a boost power of 140 W which is higher than that of 82.3% of processors and equal to that of 1.1% of processors.
Tau (power duration limit)
What it is: The time limit the CPU can stay at higher boost power before dropping toward sustained power.
When it matters: When you want to understand turbo behavior under longer loads.

Importance: MEDIUM

Good value: <=28 s

?
Configurable TDP
What it is: Allows the processor to run in alternate power modes instead of being fixed to one default TDP target.
When it matters: When you want more control over heat, noise, and power draw in compact systems, quieter builds, or thermally limited machines.

Importance: LOW

no
Intel Core i9 7900X does not support configurable TDP. 52.9% of processors support configurable TDP.
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Intel Core i9 7900X vs the average processor

  • 28 more PCIe lanes
    Intel Core i9 7900X has more PCIe lanes than the average processor (44 vs 16). The average processor offers 16 PCIe lanes.
    What it is: The number of PCIe lanes provided directly by the processor.
    When it matters: When you connect fast GPUs, SSDs, or expansion cards.

    Importance: HIGH

    Good value: >=20

    Intel Core i9 7900X has more PCIe lanes than the average processor (44 vs 16). The average processor offers 16 PCIe lanes.44 vs 16
  • 12 more CPU threads
    Intel Core i9 7900X has more CPU threads than the average processor (20 vs 8). The average processor has 8 CPU threads.
    What it is: The total number of processing threads the CPU can handle at once.
    When it matters: When you run heavily threaded workloads or multitask a lot.

    Importance: HIGH

    Good value: 16+

    Intel Core i9 7900X has more CPU threads than the average processor (20 vs 8). The average processor has 8 CPU threads.20 vs 8
  • 89.9% better multi-core performance
    Intel Core i9 7900X has a higher multi-core performance than the average processor (5,286 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
    What it is: A Cinebench R20 score that reflects how well the processor handles long, heavy rendering workloads across many cores.
    When it matters: When you care about sustained multi-core performance in rendering, compiling, heavy creation work, or productivity workloads that use many threads.

    Importance: HIGH

    Good value: >4700

    Intel Core i9 7900X has a higher multi-core performance than the average processor (5,286 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.5,286 vs 2,783
  • Unlocked for overclocking
    Intel Core i9 7900X has an unlocked multiplier, the average processor does not.
    What it is: Has an unlocked CPU multiplier, which makes manual CPU overclocking much easier on supported platforms.
    When it matters: When you plan to push clock speeds beyond stock settings instead of leaving the processor completely at default behavior.

    Importance: MEDIUM

    Intel Core i9 7900X has an unlocked multiplier, the average processor does not.
  • 4x larger L2 cache
    Intel Core i9 7900X has a higher L2 cache than the average processor (10 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
    What it is: The total amount of L2 cache available across the processor.
    When it matters: When you want to compare CPU design efficiency and how much fast intermediate cache the cores have available.

    Importance: MEDIUM

    Good value: >=6 MB

    Intel Core i9 7900X has a higher L2 cache than the average processor (10 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.10 MB vs 2.5 MB
  • 4 more CPU cores
    Intel Core i9 7900X has more CPU cores than the average processor (10 vs 6). The average processor has 6 CPU cores.
    What it is: The number of physical CPU cores on the processor.
    When it matters: When you run workloads that benefit from more real cores.

    Importance: HIGH

    Good value: 8+

    Intel Core i9 7900X has more CPU cores than the average processor (10 vs 6). The average processor has 6 CPU cores.10 vs 6
  • 83.3% higher multi-core score
    Intel Core i9 7900X has a higher Geekbench 6 multi-core score than the average processor (8,787 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
    What it is: A Geekbench 6 score that reflects multi-core CPU performance in mixed modern workloads.
    When it matters: When you want a quick picture of multi-core speed in everyday mixed workloads, multitasking, and broadly optimized software.

    Importance: HIGH

    Good value: >8500

    Intel Core i9 7900X has a higher Geekbench 6 multi-core score than the average processor (8,787 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.8,787 vs 4,793
  • 98.3% higher PassMark score
    Intel Core i9 7900X has a higher PassMark benchmark score than the average processor (20,883 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
    What it is: A benchmark score that gives a broad idea of overall processor performance.
    When it matters: When you want a quick overall performance comparison.

    Importance: HIGH

    Good value: >19000

    Intel Core i9 7900X has a higher PassMark benchmark score than the average processor (20,883 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.20,883 vs 10,532.5
  • Modern CPU socket
    Intel Core i9 7900X uses a more modern CPU socket than the average processor (LGA2,066 vs FP2).
  • Higher-end processor class
    Intel Core i9 7900X belongs to a higher-end processor class than the average processor (workstation vs mobile).
  • 12 more CPU threads
    Intel Core i9 7900X has more CPU threads than the average processor (20 vs 8). The average processor has 8 CPU threads.
  • 89.9% better multi-core performance
    Intel Core i9 7900X has a higher multi-core performance than the average processor (5,286 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • Unlocked for overclocking
    Intel Core i9 7900X has an unlocked multiplier, the average processor does not.
  • 4 more CPU cores
    Intel Core i9 7900X has more CPU cores than the average processor (10 vs 6). The average processor has 6 CPU cores.
  • 83.3% higher multi-core score
    Intel Core i9 7900X has a higher Geekbench 6 multi-core score than the average processor (8,787 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 98.3% higher PassMark score
    Intel Core i9 7900X has a higher PassMark benchmark score than the average processor (20,883 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 4.7% higher boost clock
    Intel Core i9 7900X has a higher boost clock speed than the average processor (4.5 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 2.84x better overclocked performance
    Intel Core i9 7900X has a higher overclocked performance than the average processor (25,732 vs 9,051). The average processor scores 9,051 in overclocked PassMark.
  • 4x larger L2 cache
    Intel Core i9 7900X has a higher L2 cache than the average processor (10 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 2x more L2 per core
    Intel Core i9 7900X has more L2 cache per core than the average processor (1 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 66.7% larger L1 cache
    Intel Core i9 7900X has a higher L1 cache than the average processor (640 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • 71.9% larger L3 cache
    Intel Core i9 7900X has a higher L3 cache than the average processor (13.8 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • 28 more PCIe lanes
    Intel Core i9 7900X has more PCIe lanes than the average processor (44 vs 16). The average processor offers 16 PCIe lanes.
  • Supports memory overclocking
    Intel Core i9 7900X supports memory overclocking, the average processor does not.
  • 85.6% higher memory bandwidth
    Intel Core i9 7900X has a higher memory bandwidth than the average processor (85 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • 2x more memory capacity
    Intel Core i9 7900X has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
  • 5 °C lower CPU temperature
    Intel Core i9 7900X has a lower CPU temperature than the average processor (95 °C vs 100 °C). The average processor runs at a CPU temperature of 100 °C.
  • 3 year/s older release date
    Intel Core i9 7900X has an older release date than the average processor (2,017 vs 2,020).
    June 2017
  • No crypto acceleration
    Intel Core i9 7900X does not include crypto acceleration, the average processor does.
  • 48.2% slower Blender rendering
    Intel Core i9 7900X has a higher Blender BMW27 render time than the average processor (172 vs 331.88). The average processor needs 331.88 for the Blender BMW27 test.
  • 83.1% larger die size
    Intel Core i9 7900X has a higher die size than the average processor (326 mm² vs 178 mm²). The average processor has a die size of 178 mm².
  • 16.7% larger process node
    Intel Core i9 7900X has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 19.8% less L3 per core
    Intel Core i9 7900X has less L3 cache per core than the average processor (1.4 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • Less advanced microarchitecture
    Intel Core i9 7900X uses a less advanced microarchitecture than the average processor (Skylake vs Kaby Lake).
  • 2 fewer memory channels
    Intel Core i9 7900X has fewer memory channels than the average processor (4 vs 2). The average processor supports 2 memory channels.
  • 9.1% lower memory speed
    Intel Core i9 7900X has a lower maximum memory speed than the average processor (2,666 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • No integrated graphics
    Intel Core i9 7900X does not include integrated graphics, the average processor does.
  • 3.11x higher base power
    Intel Core i9 7900X has a higher base power draw than the average processor (140 W vs 45 W). The average processor has a base power draw of 45 W.
  • 2.19x higher boost power
    Intel Core i9 7900X has a higher boost power draw than the average processor (140 W vs 64 W). The average processor has a boost power draw of 64 W.
  • 3.11x higher TDP
    Intel Core i9 7900X has a higher TDP than the average processor (140 W vs 45 W). The average processor has a TDP of 45 W.
  • No configurable TDP
    Intel Core i9 7900X does not support configurable TDP, the average processor does.
  • 5 °C lower TJ Max
    Intel Core i9 7900X has a lower TJ Max than the average processor (95 °C vs 100 °C). The average processor has a TJ Max of 100 °C.
  • 48.2% slower Blender rendering
    Intel Core i9 7900X has a higher Blender BMW27 render time than the average processor (172 vs 331.88). The average processor needs 331.88 for the Blender BMW27 test.
    What it is: A Blender render result based on the BMW27 scene, used to show how quickly the processor can finish a heavy 3D rendering task.
    When it matters: When rendering speed matters for 3D work, content creation, or other workloads that behave like long multi-core renders.

    Importance: HIGH

    Good value: >290

    Intel Core i9 7900X has a higher Blender BMW27 render time than the average processor (172 vs 331.88). The average processor needs 331.88 for the Blender BMW27 test.172 vs 331.88
  • 3.11x higher base power
    Intel Core i9 7900X has a higher base power draw than the average processor (140 W vs 45 W). The average processor has a base power draw of 45 W.
    What it is: The sustained power target used for longer CPU loads.
    When it matters: When you choose cooling and power delivery for sustained workloads.

    Importance: MEDIUM

    Good value: <30 W

    Intel Core i9 7900X has a higher base power draw than the average processor (140 W vs 45 W). The average processor has a base power draw of 45 W.140 W vs 45 W
  • 2.19x higher boost power
    Intel Core i9 7900X has a higher boost power draw than the average processor (140 W vs 64 W). The average processor has a boost power draw of 64 W.
    What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
    When it matters: When you size cooling and power delivery for peak turbo behavior.

    Importance: MEDIUM

    Good value: <50 W

    Intel Core i9 7900X has a higher boost power draw than the average processor (140 W vs 64 W). The average processor has a boost power draw of 64 W.140 W vs 64 W
  • 83.1% larger die size
    Intel Core i9 7900X has a higher die size than the average processor (326 mm² vs 178 mm²). The average processor has a die size of 178 mm².
    What it is: The physical area of the processor die, usually measured in square millimeters.
    When it matters: When you are comparing chip scale, packaging density, or broader design differences rather than direct user-visible performance.

    Importance: LOW

    Good value: <150 mm²

    Intel Core i9 7900X has a higher die size than the average processor (326 mm² vs 178 mm²). The average processor has a die size of 178 mm².326 mm² vs 178 mm²
  • 16.7% larger process node
    Intel Core i9 7900X has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.
    What it is: The manufacturing process node used to produce the processor, usually expressed in nanometers.
    When it matters: When efficiency, heat, and the relative modernity of the chip-making process matter to your comparison.

    Importance: HIGH

    Good value: <10 nm

    Intel Core i9 7900X has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.14 nm vs 12 nm
  • 19.8% less L3 per core
    Intel Core i9 7900X has less L3 cache per core than the average processor (1.4 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
    What it is: The amount of L3 cache effectively available per CPU core.
    When it matters: When you are comparing how much shared cache each core can draw on in deeper technical analysis.

    Importance: MEDIUM

    Good value: >=2 MB/core

    Intel Core i9 7900X has less L3 cache per core than the average processor (1.4 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.1.375 MB/core vs 1.714 MB/core
  • 3.11x higher TDP
    Intel Core i9 7900X has a higher TDP than the average processor (140 W vs 45 W). The average processor has a TDP of 45 W.
    What it is: The rated thermal design power, which gives a general idea of cooling and power needs.
    When it matters: When you choose a cooler or build in a tighter case.

    Importance: HIGH

    Good value: <30 W

    Intel Core i9 7900X has a higher TDP than the average processor (140 W vs 45 W). The average processor has a TDP of 45 W.140 W vs 45 W
  • No configurable TDP
    Intel Core i9 7900X does not support configurable TDP, the average processor does.
    What it is: Allows the processor to run in alternate power modes instead of being fixed to one default TDP target.
    When it matters: When you want more control over heat, noise, and power draw in compact systems, quieter builds, or thermally limited machines.

    Importance: LOW

    Intel Core i9 7900X does not support configurable TDP, the average processor does.

Graphic comparison of Intel Core i9 7900X and other processors

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Third-party reviews

(Reviews last updated: May 2026)

What customers like about Intel Core i9 7900X?

  • High core count (10 cores and 20 threads) provides exceptional multi-threaded performance for workstation tasks like video transcoding, rendering, and content creation.
  • Fast single-threaded performance with a high turbo clock speed of up to 4.5GHz, making it suitable for high-refresh-rate gaming when properly tuned.
  • Significant price decrease compared to its 10-core predecessor (i7-6950X), offering better performance at a much lower launch MSRP.
  • Provides 44 PCIe lanes, allowing for extensive connectivity and high-speed NVMe SSD RAID configurations on compatible X299 motherboards.
  • Excellent overclocking potential for enthusiasts, with some users reaching 4.7GHz or even 5GHz across all cores when using high-end cooling solutions.
  • Native support for AVX-512 instructions, which can significantly accelerate specific professional and scientific workloads.

What customers dislike about Intel Core i9 7900X?

  • Runs extremely hot under load due to high power consumption and the use of thermal interface material (TIM) instead of solder under the heat spreader.
  • Requires high-end, expensive cooling solutions (typically large AIOs or custom water loops) to avoid thermal throttling, especially when overclocked.
  • Gaming performance at 1080p can sometimes be inconsistent or lower than mainstream processors like the i7-7700K due to increased latency from the mesh architecture.
  • Relatively high platform entry cost, requiring a new and often expensive X299 chipset motherboard and quad-channel DDR4 memory.
  • Significant power draw, with some systems pulling over 200W under heavy encoding loads, leading to higher energy costs and heat output.
  • Lacks support for Intel SGX, which prevents the playback of 4K Blu-ray discs on systems using this processor and the X299 platform.

Expert reviews

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gamespot.com
19/06/2017

The Intel Core i9-7900X, a 10-core/20-thread Skylake-X processor, offers a significant performance boost over the previous generation while reducing the MSRP to $999. Prosumers benefit from its high multi-core capability for tasks like 4K encoding and streaming. However, a key con is its high 140W TDP, requiring robust, often expensive, liquid cooling to manage intense heat output....Read more

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impulsegamer.com
16/11/2019

The Impulse Gamer review highlights the Intel Core i9-7900X as a 10-core, 20-thread workstation processor that drastically reduces processing times for intensive tasks like video rendering and specialized hobbyist software. Technically, the CPU features a 3.3 GHz base clock with Turbo Boost Max 3.0 up to 4.5 GHz, outperforming predecessors in both heavily multithreaded apps and...Read more

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techpowerup.com
29/11/2017

The Intel Core i9-7900X is a 10-core/20-thread HEDT processor based on the 14nm Skylake-X architecture, offering significant multi-threaded performance gains (15-25% over its predecessor) and 44 PCIe lanes for workstations. It provides high clock speeds up to 4.5 GHz (Turbo Boost Max 3.0) at a $999 price point. However, the new mesh interconnect can result in mixed gaming...Read more

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uk.pcmag.com
30/06/2017

The Intel Core i9-7900X is a 10-core, 20-thread HEDT processor offering exceptional multi-core performance for workstation tasks. It boasts significant speed improvements over predecessors, though it faces stiff competition in single-threaded scenarios from mainstream chips. Key drawbacks include high thermal output, with reports of the chip running hot and hitting high temperatures...Read more

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kitguru.net
01/07/2017

The KitGuru review highlights the Intel Core i9-7900X as a high-performance 10-core, 20-thread processor offering significant multi-threaded gains over its predecessor at a competitive $999 price point. Key advantages include its high 4.0GHz all-core frequency, exceptional productivity and video encoding speeds, and increased accessibility for high-end desktop users. However, the...Read more

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arstechnica.com
04/07/2017

The Intel Core i9-7900X (Skylake-X) is identified as an exceptionally powerful 10-core, 20-thread consumer CPU offering unmatched multi-threaded performance and high out-of-the-box clock speeds. Its pros include superior content creation capabilities, 44 PCIe lanes, and strong performance in productivity benchmarks, though it faces heavy competition from AMD. Key cons involve...Read more

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pcmag.com
23/06/2017

The Intel Core i9-7900X is a 10-core, 20-thread high-end desktop (HEDT) processor that offers exceptional multi-core performance for tasks like 4K video encoding at a significantly reduced $999 price point compared to its predecessor. While providing superior workstation performance, the chip generates high heat requiring robust liquid cooling and necessitates a costly new X299...Read more

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bit-tech.net
16/06/2017

Bit-tech's review of the 10-core/20-thread Intel Core i9-7900X (Skylake-X) on the X299 chipset highlights a potent, 14nm high-end desktop (HEDT) processor designed to compete with AMD's Ryzen, featuring a redesigned cache hierarchy. The chip dominates in heavy content creation, such as 4K video transcoding and rendering, while leveraging Turbo Boost Max Technology 3.0 for...Read more

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guru3d.com
19/06/2017

The Guru3D review of the Intel Core i9-7900X, a 10-core/20-thread HEDT processor, highlights its 14nm Skylake-X architecture, which features a new mesh interconnect and a 3.3 GHz base/4.5 GHz boost clock. Priced at $999 upon release, it delivers significant multi-threaded performance gains (15–25%) over previous generations in applications like rendering and encoding. While offering...Read more

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tomshardware.com
19/06/2017

The Intel Core i9-7900X introduces the Skylake-X architecture with a new mesh topology and 10 cores, offering significant improvements in workstation performance over its predecessor while launching at a lower price point. It delivers exceptional multi-threaded performance in rendering and video encoding, alongside strong single-threaded speeds via Turbo Boost Max 3.0, though the...Read more

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tomshardware.com
08/06/2018

Tom's Hardware tested the limits of the Intel Core i9-7900X, achieving a stable 5.8 GHz overclock through delidding and extreme liquid nitrogen (LN2) cooling to overcome thermal limitations from the stock TIM. The review highlights the processor's immense scaling potential and performance, particularly with direct-die cooling, though it notes that extreme heat, high power...Read more

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techadvisor.com
09/08/2017

The Intel Core i9-7900X, reviewed by Tech Advisor, is a 10-core, 20-thread HEDT processor designed for high-performance workstation tasks, featuring Turbo Boost Max 3.0 for enhanced single-core speeds. While delivering massive multi-core power for rendering and providing 44 PCIe lanes for extensive connectivity, the chip suffers from high thermal output due to the use of thermal...Read more

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tweaktown.com
19/06/2017

The TweakTown review of the Intel Core i9-7900X "Skylake-X" processor highlights a significant performance leap in multi-core tasks, driven by a new mesh interconnect and a 10-core/20-thread configuration. Priced at $999, it offers superior value over its predecessor with improved Turbo Boost Max 3.0 speeds. However, major cons include extreme heat generation and high power...Read more

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chip.de
27/06/2017

The Intel Core i9-7900X is a 10-core, 20-thread HEDT processor featuring a 3.3 GHz base and 4.5 GHz boost clock, delivering 15% to 25% higher multi-threaded performance than the previous 6950X. It operates on the Skylake-X architecture with a rebalanced cache and supports 44 PCIe Gen 3 lanes, offering excellent performance for workstations while significantly lowering the entry cost...Read more

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computerbild.de
30/06/2017

The Intel Core i9-7900X (Skylake-X) offers 10 cores and 20 threads for $999, providing a more affordable entry into high-end desktop (HEDT) computing compared to its predecessor. Utilizing a new mesh interconnect and supporting 44 PCIe lanes, this processor delivers strong multi-core performance for 4K video rendering and 3D modeling, while Turbo Boost Max 3.0 boosts single-threaded...Read more

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notebookcheck.com
02/08/2017

The Intel Core i9-7900X "Skylake-X" processor is a high-end desktop (HEDT) CPU featuring 10 cores and 20 threads, offering significant productivity performance gains of 15% to 25% over its predecessor. While delivering high-speed computing and a lower $999 launch price, it suffers from extreme power consumption (exceeding 230W under load) and high thermal output due to the use of...Read more

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pcwelt.de
26/07/2017

The PC-WELT review of the Intel Core i9-7900X highlights it as a powerful, 10-core/20-thread HEDT processor with improved price-to-performance compared to its predecessor, offering a $999 price point with 15–25% better multi-threaded performance. Key advantages include its high core count, 44 PCIe lanes, and strong single-threaded performance via Turbo Boost Max 3.0, making it an...Read more

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gamestar.de
07/07/2017

The Intel Core i9-7900X introduces the 14nm Skylake-X architecture with 10 cores/20 threads, boasting 3.3 GHz base and 4.5 GHz turbo speeds on the X299 platform with 44 PCIe lanes. It offers superior multi-threaded performance in professional applications compared to previous generations, though it can suffer from inconsistent gaming performance due to higher latency in the new mesh...Read more

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computerbase.de
19/06/2017

The Intel Core i9-7900X (Skylake-X) on the LGA 2066 socket delivers a 10-core, 20-thread, high-performance workstation solution, offering roughly 15-20% higher multi-threaded performance than its predecessor, the i7-6950X, for a significantly lower $999 MSRP. It is designed for creators with 44 PCIe lanes for extensive connectivity, quad-channel DDR4 memory support, and high boost...Read more

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tomshardware.fr
21/06/2017

The Tom's Hardware France review of the Intel Core i9-7900X highlights a 10-core, 20-thread Skylake-X processor that delivers exceptional professional rendering performance via its new Mesh architecture, offering up to 48% higher performance than previous generations. However, the chip suffers from severe thermal issues, with temperatures approaching 100°C under load due to Intel...Read more

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cowcotland.com
07/08/2017

The Intel Core i9-7900X (Skylake-X) features 10 cores/20 threads, a new mesh interconnect system, and Turbo Boost Max 3.0 (up to 4.5 GHz) to dominate multi-threaded workloads, including 4K video editing and 3D rendering. Key advantages include exceptional raw performance over the previous 6950X, 44 PCIe lanes, and strong overclocking potential, making it ideal for high-end...Read more

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hardware.fr
29/06/2017

The Hardware.fr review of the Intel Core i9-7900X and Core i7-7740X highlights a shift to the LGA 2066 socket with Skylake-X and Kaby Lake-X architectures. The 10-core i9-7900X acts as a powerful multitasking tool using a new mesh interconnect, while the i7-7740X is characterized as a confusing entry, functioning essentially as a rebadged i7-7700K on the high-end X299 platform. The...Read more

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comptoir-hardware.com
25/07/2017

The Comptoir-Hardware review of the Intel X299 platform highlights the Core i9-7900X as a powerful 10-core processor offering excellent multi-threaded performance and 44 PCIe lanes for workstation tasks, though it suffers from high power consumption and extreme heat, requiring superior cooling. Conversely, the Core i7-7740X is a Kaby Lake-X chip characterized as an impressive...Read more

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geeknetic.es
08/07/2017

The Intel Core i9-7900X (Skylake-X) introduces a 10-core/20-thread configuration at a competitive price point, featuring a 2D mesh interconnect and base/boost speeds of 3.3/4.5 GHz. It provides exceptional multi-threaded performance (15-25% gains) suitable for content creation, but faces significant thermal constraints, with high temperatures exceeding 90°C due to thermal paste...Read more

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profesionalreview.com
13/06/2017

The Intel Core i9-7900X is described as a transformative "all-rounder" for the HEDT market, bridging high core counts with high clock speeds up to 4.5 GHz, significantly outperforming its predecessors. A major pro is the reduced $999 launch price for 10 cores, 20 threads, and 44 PCIe lanes, offering superior value over previous flagships. While excelling in workstation tasks, a...Read more

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profesionalreview.com
20/06/2017

A 2017 Profesional Review comparison found that while the Intel Core i9-7900X offers roughly 25% superior performance, it costs nearly double that of the AMD Ryzen 7 1800X, which provides better value. The Intel chip boasts 44 PCIe lanes and top-tier workstation performance, but faces drawbacks like high power consumption (214W) and excessive heat requiring heavy cooling....Read more

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profesionalreview.com
19/06/2017

The Intel Core i9-7900X, featuring 10 cores and 20 threads on the LGA 2066 socket, serves as a high-end desktop processor utilizing a new Mesh Topology to enhance performance. It offers a significant, roughly 15% improvement in multi-core tasks over its predecessor and boasts impressive overclocking capabilities to 4.7 GHz. Key advantages highlighted include 44 PCIe lanes for...Read more

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hwupgrade.it
25/07/2017

The Intel Core i9-7900X, along with the i7-7740X and i5-7640K, launches the Skylake-X and Kaby Lake-X series on the HEDT platform, featuring a shift to a mesh interconnect and providing substantial performance gains in multi-threaded tasks, particularly for the 10-core i9-7900X. The lineup delivers high clock speeds and, for the Kaby Lake-X models, significant overclocking...Read more

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tomshw.it
20/06/2017

The Intel Core i9-7900X "Skylake-X" marks a shift in high-end desktop (HEDT) strategy with its 10-core, 20-thread, 14nm architecture, introducing a mesh topology and enhanced cache structure for high performance. It offers exceptional multi-threaded gains over predecessors and, priced around $999, provides high value with 44 PCIe lanes, though it suffers from thermal issues due to...Read more

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it.ign.com
10/08/2017

The IGN Italia review of the Intel Core i9-7900X (Skylake-X) highlights a powerful 10-core/20-thread HEDT processor that provides significant performance gains (15-25% over its predecessor) for workstations, rendering, and video editing. It boasts a high 4.5 GHz turbo boost, with the review testing, in part, its potential to overclock up to 4.9 GHz. However, this high-end, $1,000...Read more

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tweakers.net
25/09/2017

Tweakers reviews the Intel Core i9-7960X and i9-7980XE, identifying them as high-performance workstation CPUs designed to compete with AMD's Threadripper, with the 18-core 7980XE taking the performance crown via high clock speeds and core counts. While delivering unmatched multi-threaded performance in rendering tasks, these processors are hampered by extreme power consumption,...Read more

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hardware.info
03/07/2017

The Hardware.info review characterizes the Intel Core i7-7820X and i7-7800X as more affordable entry points into the Skylake-X ecosystem, designed to compete with AMD's Ryzen 7 lineup. These processors utilize a "mesh" interconnect and revised cache structure, though they are limited to 28 PCIe lanes compared to the higher-end Core i9's 44 lanes. The 8-core/16-thread i7-7820X...Read more

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tweakers.net
19/06/2017

Tweakers reviews the Intel X299 platform, highlighting a, "rushed," response to Ryzen that introduces Skylake-X with a new mesh topology, which boosts professional, multi-threaded workloads but causes inconsistent gaming performance. While Skylake-X offers improved price-per-core, it suffers from severe thermal issues and high power draw. Conversely, Kaby Lake-X is deemed,...Read more

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