Intel Core i9 12900K Review | 78 Data compared

double-arrow
  • Avg. price in UK: ~£280
  • Avg. price in US: ~$350
  • PassMark benchmark result: 41148
  • N. of physical cores: 16
  • CPU boost clock speed: 5.2 GHz

Intel Core i9 12900K review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

7.6

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%

7.4

Technical Score

10.0%

9.4

User score

Very good
7.4

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%

7.5

Performance

18.0%

8.1

Cache & Architecture

10.0%

8.4

Memory & PCIe

7.0%

2.0

Power & Thermal

4.0%

9.2

Platform

1.0%

8.0

Integrated Graphics

Very good
9.4

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%

9.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(2289)
amazon
4.4
(39)
amazon
3.7
(24)
amazon
3.8
(4)
amazon
5.0
(2)

(Reviews last updated: May 2026)

Exceptional
  • 7.3
    Gaming

    Score components:

    30.0%

    8.0

    PassMark single-core benchmark score

    25.0%

    7.6

    Geekbench 6 single-core benchmark score

    20.0%

    8.2

    CPU boost clock speed

    17.0%

    5.2

    L3 cache

    8.0%

    6.7

    N. of physical cores

  • 6.8
    Video editing

    Score components:

    45.0%

    7.0

    Geekbench 6 multi-core benchmark score

    20.0%

    6.7

    N. of physical cores

    20.0%

    7.6

    CPU threads

    15.0%

    5.2

    L3 cache

  • intel-core-i9-12900k
  • intel-core-i9-12900k
  • intel-core-i9-12900k
  • intel-core-i9-12900k
  • intel-core-i9-12900k
  • intel-core-i9-12900k
  • intel-core-i9-12900k
intel-core-i9-12900k
intel-core-i9-12900k
intel-core-i9-12900k
intel-core-i9-12900k
intel-core-i9-12900k
intel-core-i9-12900k
intel-core-i9-12900k

Best prices in UK

Best rankings

?

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

Verdict

The Intel Core i9-12900K is a high-performance desktop processor from the Alder Lake generation featuring a hybrid architecture with 16 cores (8 Performance-cores and 8 Efficient-cores) and 24 threads. Key specifications include a maximum turbo frequency of up to 5.20 GHz, a 30 MB Intel Smart Cache, and support for both DDR5-4800 and DDR4-3200 memory on the LGA 1700 socket. Main pros include exceptional single-core and multi-threaded performance for gaming and content creation, as well as future-proofing with PCIe 5.0 support and aggressive pricing relative to competitors. However, notable cons include high power consumption (reaching a 241W maximum turbo power), high operating temperatures that necessitate robust cooling solutions, and the requirement for a new Z690 motherboard for peak performance.

Technical Specifications of processor Intel Core i9 12900K

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%

7.5

Performance

18.0%

8.1

Cache & Architecture

10.0%

8.4

Memory & PCIe

7.0%

2.0

Power & Thermal

4.0%

9.2

Platform

1.0%

8.0

Integrated Graphics

7.4
Intel Core i9 12900K has a technical score of 7.39 points, which is higher than that of 90.5% 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%

9.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(2289)
amazon
4.4
(39)
amazon
3.7
(24)
amazon
3.8
(4)
amazon
5.0
(2)

(Reviews last updated: May 2026)

9.4
Intel Core i9 12900K has a user score of 9.42 points, which is higher than that of 92.2% 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.
10
Intel Core i9 12900K has a popularity of 10 points, which is higher than 88.3% 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%

7.6

Overall score

40.0%

9.0

Price

8.0
Intel Core i9 12900K has a quality-to-price ratio of 8 points, which is higher than 94.2% 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

desktop
Intel Core i9 12900K belongs to the desktop processor class, which is more advanced than that of 56% of processors and equal to that of 37.9% 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

LGA1700
Intel Core i9 12900K uses the LGA1700 CPU socket, which is newer than that of 86.1% of processors and equal to that of 7.4% 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

Z790, H770, B760, Z690, H670, B660, H610, Q670, W680
Intel Core i9 12900K supports Z790, H770, B760, Z690, H670, B660, H610, Q670, W680 chipsets, which is broader compatibility than 86.2% of processors and equal to that of 2.2% 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 12900K 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.
Show more
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+

16
Intel Core i9 12900K has 16 CPU cores, which is more than 91.5% of processors and equal to 4% 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+

24
Intel Core i9 12900K offers 24 CPU threads, which is more than 90.3% of processors and equal to 4% 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

?
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

5.2 GHz
Intel Core i9 12900K reaches a boost clock of 5.2 GHz which is higher than that of 90.3% of processors and equal to that of 2.6% 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

8 x 3.2 GHz & 8 x 2.4 GHz
Intel Core i9 12900K has a base clock of 8x3.2 GHz & 8x2.4 GHz which is equal to that of 100% of processors.
Show more
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

10 nm
Intel Core i9 12900K uses a 10 nm process node, which is more advanced than that of 52.3% of processors and equal to that of 19.1% 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 7
Intel Core i9 12900K is built on the Intel 7 foundry process, which is more advanced than that of 66.2% of processors and equal to that of 14.9% 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

30 MB
Intel Core i9 12900K has an L3 cache of 30 MB which is larger than that of 88.1% of processors and equal to that of 1.5% 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

14 MB
Intel Core i9 12900K has an L2 cache of 14 MB which is larger than that of 87.5% of processors and equal to that of 2.2% 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

1,433.6 KB
Intel Core i9 12900K has an L1 cache of 1,433.6 KB which is larger than that of 94.3% of processors and equal to that of 0.3% of processors.
Show more
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/DDR5
Intel Core i9 12900K supports DDR DDR4/DDR5, which is newer than that of 79.1% of processors and equal to that of 9.7% 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

4,800 MHz
Intel Core i9 12900K supports memory speeds up to 4,800 MHz, which is higher than that of 66.4% of processors and equal to 5.6% 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

DDR5-4800 MHz
Intel Core i9 12900K supports JEDEC memory speeds up to DDR5-4,800 MHz, which is higher than that of 66.5% of processors and equal to 5.6% 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

?
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 12900K supports up to 128 GB of memory, which is more than 61.9% of processors and equal to 21.4% of processors.
Show more
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

yes
Intel Core i9 12900K includes integrated graphics. 87.6% 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

Intel UHD Graphics 770
Intel Core i9 12900K uses the Intel UHD Graphics 770 integrated GPU, which is more advanced than that in 56.9% and equal to that in 4.9%.
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

32
Intel Core i9 12900K has 32 GPU execution units, which is more than 70.8% of processors and equal to 9.9% of processors.
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

300 MHz
Intel Core i9 12900K has an integrated GPU clock of 300 MHz which is lower than that of 57% of processors and equal to that of 38.7% of processors.
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

H.264 (HW decode), H.265 (HW decode), VP9 (HW decode), AV1 (HW decode), JPEG (HW decode)
Intel Core i9 12900K supports H.264 (HW decode), H.265 (HW decode), VP9 (HW decode), AV1 (HW decode), JPEG (HW decode) media codecs, which is broader support than 96.8% of processors.
Show more
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

125 W
Intel Core i9 12900K has a TDP of 125 W which is higher than that of 92.9% of processors and equal to that of 1.4% 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

125 W
Intel Core i9 12900K has a base power of 125 W which is higher than that of 92.9% of processors and equal to that of 1.5% 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

241 W
Intel Core i9 12900K has a boost power of 241 W which is higher than that of 95.9% of processors and equal to that of 0.1% 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

N/A
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 12900K does not support configurable TDP. 52.9% support configurable TDP.
Show more

Intel Core i9 12900K vs the average processor

  • 3.66x better multi-core performance
    Intel Core i9 12900K has a higher multi-core performance than the average processor (10,180 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 12900K has a higher multi-core performance than the average processor (10,180 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.10,180 vs 2,783
  • 66.3% better single-core performance
    Intel Core i9 12900K has a higher PassMark single-core score than the average processor (4,128 vs 2,483). The average processor scores 2,483 in PassMark single-core.
    What it is: A benchmark score that reflects single-core CPU performance.
    When it matters: When you care about responsiveness in lighter or older software.

    Importance: HIGH

    Good value: >3200

    Intel Core i9 12900K has a higher PassMark single-core score than the average processor (4,128 vs 2,483). The average processor scores 2,483 in PassMark single-core.4,128 vs 2,483
  • 3.25x higher multi-core score
    Intel Core i9 12900K has a higher Geekbench 6 multi-core score than the average processor (15,560 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 12900K has a higher Geekbench 6 multi-core score than the average processor (15,560 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.15,560 vs 4,793
  • 3.91x higher PassMark score
    Intel Core i9 12900K has a higher PassMark benchmark score than the average processor (41,148 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 12900K has a higher PassMark benchmark score than the average processor (41,148 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.41,148 vs 10,532.5
  • 10 more CPU cores
    Intel Core i9 12900K has more CPU cores than the average processor (16 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 12900K has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.16 vs 6
  • 76.1% higher single-core score
    Intel Core i9 12900K has a higher Geekbench 6 single-core score than the average processor (2,591 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
    What it is: A Geekbench 6 score that reflects single-core CPU performance in mixed modern workloads.
    When it matters: When you care about snappy everyday performance in lighter apps, browsing, office work, or tasks that do not scale well across many cores.

    Importance: HIGH

    Good value: >2000

    Intel Core i9 12900K has a higher Geekbench 6 single-core score than the average processor (2,591 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.2,591 vs 1,471
  • 16 more CPU threads
    Intel Core i9 12900K has more CPU threads than the average processor (24 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 12900K has more CPU threads than the average processor (24 vs 8). The average processor has 8 CPU threads.24 vs 8
  • 20.9% higher boost clock
    Intel Core i9 12900K has a higher boost clock speed than the average processor (5.2 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
    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

    Intel Core i9 12900K has a higher boost clock speed than the average processor (5.2 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.5.2 GHz vs 4.3 GHz
  • Broader instruction support
    Intel Core i9 12900K supports a broader instruction set than the average processor (MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA, CLMUL, BMI1, BMI2, ABM, ADX vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
  • Modern CPU socket
    Intel Core i9 12900K uses a more modern CPU socket than the average processor (LGA1700 vs FP2).
  • Supports HMP
    Intel Core i9 12900K supports HMP, the average processor does not.
  • 3.66x better multi-core performance
    Intel Core i9 12900K has a higher multi-core performance than the average processor (10,180 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 66.3% better single-core performance
    Intel Core i9 12900K has a higher PassMark single-core score than the average processor (4,128 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 3.25x higher multi-core score
    Intel Core i9 12900K has a higher Geekbench 6 multi-core score than the average processor (15,560 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 3.91x higher PassMark score
    Intel Core i9 12900K has a higher PassMark benchmark score than the average processor (41,148 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 10 more CPU cores
    Intel Core i9 12900K has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.
  • 76.1% higher single-core score
    Intel Core i9 12900K has a higher Geekbench 6 single-core score than the average processor (2,591 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
  • 16 more CPU threads
    Intel Core i9 12900K has more CPU threads than the average processor (24 vs 8). The average processor has 8 CPU threads.
  • 20.9% higher boost clock
    Intel Core i9 12900K has a higher boost clock speed than the average processor (5.2 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • Unlocked for overclocking
    Intel Core i9 12900K has an unlocked multiplier, the average processor does not.
  • 2 wider front-end design
    Intel Core i9 12900K has a higher front-end width than the average processor (6 vs 4). The average processor uses front-end width of 4.
  • 5.6x larger L2 cache
    Intel Core i9 12900K has a higher L2 cache than the average processor (14 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 3.75x larger L3 cache
    Intel Core i9 12900K has a higher L3 cache than the average processor (30 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • 2.5x more L2 per core
    Intel Core i9 12900K has more L2 cache per core than the average processor (1.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • Uses big.LITTLE design
    Intel Core i9 12900K uses a big.LITTLE design, the average processor does not.
  • 3.73x larger L1 cache
    Intel Core i9 12900K has a higher L1 cache than the average processor (1,433.6 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • More advanced microarchitecture
    Intel Core i9 12900K uses a more advanced microarchitecture than the average processor (Alder Lake vs Kaby Lake).
  • More advanced foundry
    Intel Core i9 12900K uses a more advanced foundry process than the average processor (Intel 7 vs Intel 14 nm).
  • 16.7% smaller process node
    Intel Core i9 12900K has a lower process node than the average processor (10 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • Newer PCIe version
    Intel Core i9 12900K supports a newer PCIe version than the average processor (5.0 + 4.0 vs 3.0).
  • Newer DDR support
    Intel Core i9 12900K supports a newer DDR generation than the average processor (DDR4/DDR5 vs DDR4).
  • Supports memory overclocking
    Intel Core i9 12900K supports memory overclocking, the average processor does not.
  • 4 more PCIe lanes
    Intel Core i9 12900K has more PCIe lanes than the average processor (20 vs 16). The average processor offers 16 PCIe lanes.
  • 67.7% higher memory bandwidth
    Intel Core i9 12900K has a higher memory bandwidth than the average processor (76.8 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 12900K has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
  • Supports ECC memory
    Intel Core i9 12900K supports ECC memory, the average processor does not.
  • 63.7% higher memory speed
    Intel Core i9 12900K has a higher maximum memory speed than the average processor (4,800 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • 1 more supported displays
    Intel Core i9 12900K has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.
  • 50.1% slower classroom rendering
    Intel Core i9 12900K has a higher Blender Classroom render time than the average processor (395.3 vs 791,745). The average processor needs 791,745 for the Blender Classroom test.
  • 20.8% larger die size
    Intel Core i9 12900K has a higher die size than the average processor (215 mm² vs 178 mm²). The average processor has a die size of 178 mm².
  • 3.77x higher boost power
    Intel Core i9 12900K has a higher boost power draw than the average processor (241 W vs 64 W). The average processor has a boost power draw of 64 W.
  • 2.78x higher base power
    Intel Core i9 12900K has a higher base power draw than the average processor (125 W vs 45 W). The average processor has a base power draw of 45 W.
  • 2.78x higher TDP
    Intel Core i9 12900K has a higher TDP than the average processor (125 W vs 45 W). The average processor has a TDP of 45 W.
  • No configurable TDP
    Intel Core i9 12900K does not support configurable TDP, the average processor does.
  • 3.77x higher boost power
    Intel Core i9 12900K has a higher boost power draw than the average processor (241 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 12900K has a higher boost power draw than the average processor (241 W vs 64 W). The average processor has a boost power draw of 64 W.241 W vs 64 W
  • 2.78x higher base power
    Intel Core i9 12900K has a higher base power draw than the average processor (125 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 12900K has a higher base power draw than the average processor (125 W vs 45 W). The average processor has a base power draw of 45 W.125 W vs 45 W
  • 50.1% slower classroom rendering
    Intel Core i9 12900K has a higher Blender Classroom render time than the average processor (395.3 vs 791,745). The average processor needs 791,745 for the Blender Classroom test.
    What it is: A Blender render result based on the Classroom scene, used to show how quickly the processor can complete a demanding rendering workload.
    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: >1500

    Intel Core i9 12900K has a higher Blender Classroom render time than the average processor (395.3 vs 791,745). The average processor needs 791,745 for the Blender Classroom test.395.32 vs 791,745
  • 2.78x higher TDP
    Intel Core i9 12900K has a higher TDP than the average processor (125 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 12900K has a higher TDP than the average processor (125 W vs 45 W). The average processor has a TDP of 45 W.125 W vs 45 W
  • No configurable TDP
    Intel Core i9 12900K 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 12900K does not support configurable TDP, the average processor does.
  • 20.8% larger die size
    Intel Core i9 12900K has a higher die size than the average processor (215 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 12900K has a higher die size than the average processor (215 mm² vs 178 mm²). The average processor has a die size of 178 mm².215 mm² vs 178 mm²

Graphic comparison of Intel Core i9 12900K and other processors

Attribute category
Attribute
No results found

Third-party reviews

(Reviews last updated: May 2026)

What customers like about Intel Core i9 12900K?

  • World-class single-core performance, making it a top-tier choice for high-refresh-rate gaming
  • Hybrid architecture (P-cores and E-cores) provides a significant boost for multi-threaded productivity tasks like video editing and 3D rendering
  • Includes support for future-proof standards like DDR5 RAM and PCIe 5.0
  • Better overall performance-to-value ratio compared to previous 11th Gen flagships
  • Excellent for intensive multi-tasking and professional software workflows

What customers dislike about Intel Core i9 12900K?

  • Extremely high power consumption under heavy loads, often requiring a 360mm AIO liquid cooler to prevent thermal throttling
  • Requires a new LGA1700 motherboard (Z690/Z790), increasing the total cost of adoption
  • High operating temperatures; users often report the chip hitting 90-100°C during stress tests without high-end cooling
  • Optimal performance is largely dependent on Windows 11 due to its specialized thread scheduler for the hybrid design
  • Diminishing returns for pure gamers compared to the more affordable i5-12600K or i7-12700K

Expert reviews

C
custompc.com
04/10/2023

The Intel Core i9-12900K, featuring a 16-core hybrid architecture, reclaims the performance crown by outperforming the Ryzen 9 5950X in multi-threaded tasks and setting new records in image editing. It delivers superior gaming performance in CPU-bound scenarios, introduces support for DDR5 and PCIe 5.0, and offers competitive pricing, though it demands a high-end cooler due to...Read more

G
gamesbeat.com
04/11/2021

The GamesBeat review highlights the Intel Core i9-12900K as a significant, competitive return to form for Intel, utilizing a hybrid architecture to deliver superior gaming and productivity performance against AMD's Ryzen 5000 series. Key advantages include top-tier single-threaded speeds, strong multi-threaded capabilities, high overclocking headroom, and competitive pricing....Read more

H
hardwarezone.com.sg
04/11/2021

The Intel Core i9-12900K marks a significant performance comeback, utilizing an "Alder Lake" hybrid architecture with 8 P-cores and 8 E-cores to reclaim the gaming lead. It delivers superior 1080p gaming and multi-core productivity performance, supported by forward-looking technologies like DDR5 and PCIe 5.0. Key disadvantages include high power consumption (up to 241W) and...Read more

W
windowscentral.com
04/11/2021

The Intel Core i9-12900K, reviewed by Windows Central, marks a significant turning point by reclaiming the performance crown through a hybrid 16-core (8 E) architecture and Intel Thread Director for optimized Windows 11 tasks. The processor offers unmatched single-core performance for gaming, competitive pricing, and future-proofed support for DDR5 and PCIe 5.0. However, it suffers...Read more

T
trustedreviews.com
04/11/2021

The Intel Core i9-12900K is a high-end, 16-core (8 E) hybrid processor based on Alder Lake architecture, marking a significant return to form for Intel against competitors. It supports DDR5 and PCIe 5.0, offering, at the time, top-tier performance for both gaming and productivity tasks. While it serves as an exceptional gaming chip with high frame rates, it requires a new Z690...Read more

T
theverge.com
04/11/2021

The Verge review of the Intel Core i9-12900K, based on its "Alder Lake" hybrid architecture with 8 P-cores and 8 E-cores, marks a significant return to high-end performance for Intel, challenging AMD’s market dominance. The chip excels in both gaming and productivity tasks, and the review notes that high-performance results are attainable on Windows 10, negating the strict necessity...Read more

T
techspot.com
04/11/2021

The TechSpot review of the Intel Core i9-12900K highlights the CPU's hybrid "Alder Lake" architecture, featuring eight "Golden Cove" and eight "Gracemont" cores, which enables the chip to excel in both single-threaded and multi-core workloads. As a top-tier performer, the i9-12900K is touted as the fastest gaming processor at launch and offers significant IPC improvements, alongside...Read more

P
pcmag.com
04/11/2021

The Intel Core i9-12900K, featured in the PCMag review, introduces a 16-core, 24-thread hybrid architecture, combining eight P-cores and eight E-cores to achieve top-tier performance in content creation and productivity tasks. The processor reclaims the "gaming performance crown" with superior single-threaded speeds and offers easy overclocking capabilities. The chip also supports...Read more

T
techpowerup.com
04/11/2021

The TechPowerUp review of the Intel Core i9-12900K highlights its revolutionary hybrid architecture, featuring 8 Performance-cores and 8 Efficient-cores, which establishes it as the world's fastest gaming processor at launch. Key advantages include massive performance gains in both single and multi-threaded applications, along with native support for DDR5 and PCIe 5.0, though the...Read more

T
techporn.ph
26/01/2022

The Intel Core i9-12900K, featured in the TechPorn review, introduces a performance hybrid architecture with 16 cores (8 P-cores, 8 E-cores) and 24 threads, utilizing the Intel 7 process, LGA 1700 socket, and Thread Director for Windows 11 optimization. It reclaims the performance crown in both gaming and multi-threaded workloads, offering significant improvements in IPC and...Read more

G
gadgetpilipinas.net
29/11/2021

The Intel Core i9-12900K, as reviewed by Gadget Pilipinas, represents a significant performance leap with its Alder Lake hybrid architecture, delivering top-tier performance for gaming and productivity. It features impressive IPC improvements, although it necessitates a new LGA 1700 motherboard, DDR5 RAM, and efficient cooling to manage its high power consumption. While providing...Read more

S
storagereview.com
08/03/2022

The Intel Core i9-12900K, analyzed by StorageReview, introduces a 16-core (8P/8E) hybrid architecture supporting DDR5 and PCIe 5.0, showcasing significant performance gains in single-core and GPU-bound tasks. Key pros include top-tier gaming and workstation performance that effectively challenges AMD’s lineup, alongside future-proof platform technology. However, the processor faces...Read more

H
hwcooling.net
04/11/2021

The HWCooling review of the Intel Core i9-12900K highlights the processor as a major turning point for Intel, marking the debut of the Alder Lake architecture and the "Intel 7" manufacturing process. Featuring a hybrid design with 8 P-cores and 8 E-cores, the chip reclaims the performance lead from AMD, particularly in gaming and single-threaded applications. Key pros include...Read more

G
guru3d.com
04/11/2021

The Intel Core i9-12900K introduces a "hybrid" Alder Lake architecture featuring 16 cores (8 performance, 8 efficiency) that delivers a 19% IPC improvement over previous generations, according to Guru3D. The review highlights support for DDR5 and PCIe 5.0 as key platform advantages. While offering market-leading performance in gaming and content creation, the chip suffers from high...Read more

C
computerbase.de
04/11/2021

Intel's 12th Gen "Alder Lake" processors (i9-12900K, i7-12700K, i5-12600K) utilize a hybrid architecture (P-cores/E-cores) on the new LGA 1700 platform with DDR5 and PCIe 5.0 support. The lineup, particularly the i5-12600K, offers exceptional gaming and productivity performance, reclaiming top spots from AMD. However, pros of high performance are balanced by cons including high...Read more

S
stern.de
16/12/2021

The Intel Core i9-12900K, as reviewed by Stern, introduces a hybrid "Alder Lake" architecture with 8 Performance-cores and 8 Efficiency-cores, regaining the performance lead for Intel through superior single-core performance and strong gaming capabilities. Benchmarks show high scores (1,943 in Cinebench R23 single-core) and excellent real-world gaming performance, supported by...Read more

H
hardwarecooking.fr
04/11/2021

The Intel Core i9-12900K introduces the "Alder Lake" hybrid architecture with 8 P-cores and 8 E-cores, providing exceptional single-core and multi-threaded performance that often beats competitors. As a major, high-performance, and forward-looking chip, it supports PCIe 5.0 and DDR5, ideal for heavy content creation and top-tier gaming. However, the CPU brings significant drawbacks,...Read more

C
comptoir-hardware.com
04/11/2021

The review from Comptoir-Hardware examines Intel’s 12th Gen Alder Lake CPUs, highlighting a hybrid architecture that successfully reclaims the gaming performance crown with up to 19% higher IPC. The Core i5-12600K is identified as a standout for value, while the high-end i9-12900K delivers top-tier performance but suffers from extremely high power consumption, reaching 241W under...Read more

C
comptoir-hardware.com
04/11/2021

The Intel 12th Gen "Alder Lake" review by Comptoir-Hardware highlights the hybrid architecture's success in boosting single-threaded performance by up to 19%, positioning the i9-12900K and i5-12600K as market leaders in gaming and overall value. The platform introduces Z690, LGA 1700, and DDR5/PCIe 5.0 support, enabling top-tier multitasking, though it comes with a high platform...Read more

G
geeknetic.es
4 de noviembre de 2021

a little longer The Intel Core i9-12900K, featured in the Geeknetic review, introduces a hybrid "Alder Lake" architecture with 8 P-cores and 8 E-cores, establishing Intel's return to the performance crown in gaming and multi-threaded tasks. The processor boasts impressive 5.2 GHz turbo frequencies, delivering top-tier performance for creators and gamers. Key advantages include...Read more

P
pisapapeles.net
22/08/2022

The Intel Core i9-12900K, analyzed by Pisapapeles, features a hybrid "Alder Lake" architecture with 8 Performance cores and 8 Efficient cores, supporting DDR5 and PCIe 5.0. It delivers exceptional gaming and content creation performance, often outperforming the Ryzen 9 5950X, with boost speeds reaching 5.2 GHz. However, the processor exhibits extreme power consumption and heat...Read more

R
rpp.pe
05/05/2022

According to a review by RPP Noticias, the Intel Core i9-12900K marks a significant "return to form" for Intel, utilizing a hybrid "Alder Lake" architecture with 8 Performance and 8 Efficient cores to reclaim the gaming performance crown. The processor's primary strengths include unmatched single-core speeds reaching 5.2 GHz, providing top-tier performance for high-refresh-rate...Read more

I
itseller.uy
08/02/2022

The Intel Core i9-12900K, featured on ITSeller.uy, is presented as a revolutionary processor utilizing a hybrid architecture with 8 P-cores and 8 E-cores, effectively reclaiming the gaming performance lead. Key advantages include stellar performance in both gaming and content creation, supported by PCIe 5.0 and DDR5 memory compatibility. However, the review highlights significant...Read more

I
itwarelatam.com
08/02/2022

The Intel Core i9-12900K, as reviewed by ITware Latam, utilizes an "Alder Lake" hybrid architecture combining 8 Performance cores and 8 Efficient cores, reaching up to 5.2 GHz for exceptional gaming and workstation performance. It supports DDR5 memory and PCIe 5.0, with Intel Thread Director optimizing multitasking efficiency. The processor is lauded as a top-tier performer,...Read more

M
muycomputer.com
04/11/2021

The Intel Core i9-12900K, reviewed in the provided article, marks a major shift for Intel with its 16-core, 24-thread hybrid Alder Lake architecture, featuring high-performance P-cores and efficiency E-cores managed by Intel Thread Director. Benchmarks demonstrate that it provides industry-leading gaming performance and competitive multi-threaded capabilities, supported by new DDR5...Read more

E
elchapuzasinformatico.com
04/11/2021

The Intel Core i9-12900K, reviewed by El Chapuzas Informático, is presented as the new market leader, reclaiming the performance crown from AMD's Ryzen 9 5950X. It utilizes a hybrid architecture combining 8 P-Cores and 8 E-Cores (16 cores/24 threads) for massive single-core and multi-threaded gains over 11th Gen. The chip excels in both gaming and productivity while supporting...Read more

P
profesionalreview.com
04/11/2021

The Intel Core i9-12900K introduces a "hybrid" Alder Lake architecture, combining 16 cores (8 P-cores + 8 E-cores) and 24 threads using Intel 7 process, with Intel Thread Director for optimized task scheduling. It boasts top-tier gaming performance, reclaiming the lead from AMD, and delivers massive multi-core gains in production tasks alongside DDR5 and PCIe 5.0 support. Key...Read more

M
multiplayer.it
04/11/2021

The Intel Core i9-12900K, as reviewed by Multiplayer.it, introduces a 12th Gen "Alder Lake" hybrid architecture, utilizing 8 performance cores and 8 efficiency cores to deliver top-tier gaming and multi-threaded performance. This flagship processor supports DDR5 memory and PCIe 5.0, making it a future-proof platform, while Intel Thread Director ensures optimized task management...Read more

T
tomshw.it
04/11/2021

The Tom's Hardware review of the Intel Core i9-12900K and i5-12600K highlights a triumphant return to performance leadership via the "Alder Lake" hybrid architecture. The i9-12900K is identified as a top-tier gaming processor, while the i5-12600K provides exceptional value, both offering massive leaps in single-thread and multi-threaded performance, often beating competitors in...Read more

T
tweakers.net
07/01/2022

The Intel Core i9-12900K introduces "Alder Lake" hybrid architecture, utilizing 8 Performance cores and 8 Efficient cores to deliver top-tier single-threaded and gaming performance that competes with or beats the AMD Ryzen 9 5950X. Key advantages include support for PCIe 5.0 and DDR5 memory, making it a high-performance choice for enthusiasts. However, the processor exhibits high...Read more

C
ct.nl
04/11/2021

The Intel Core i9-12900K and AMD Ryzen 9 5950X showdown highlights a shift, with Intel utilizing a hybrid architecture (8 P-cores, 8 E-cores) for superior single-threaded performance and gaming. Conversely, the 5950X relies on traditional Zen 3 architecture, offering 16 high-performance cores that excel in heavy multi-threaded, professional applications. The i9-12900K provides...Read more

T
techgaming.nl
04/11/2021

The TechGaming.nl review of the Intel Core i9-12900K highlights a revolutionary hybrid architecture (8 P-cores + 8 E-cores) that benefits heavily from Windows 11’s improved thread scheduling, while Windows 10 acts as a suboptimal platform. A major pro is the Intel Thread Director managing tasks, though the necessity of Windows 11 for optimal efficiency acts as a potential con for...Read more

T
tweakers.net
04/11/2021

The Tweakers review of Intel's 12th Gen 'Alder Lake' CPUs highlights a significant comeback, driven by a hybrid architecture combining P-cores and E-cores. The Core i9-12900K reclaims the performance crown in gaming and multitasking, while the i5-12600K offers exceptional value and strong performance, supported by a new LGA 1700 platform with DDR5 and PCIe 5.0 capabilities. However,...Read more

Video reviews

Compare Intel Core i9 12900K with other processors

VS
VS

Compare