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Intel Core i9 9900T Review | 78 Data compared

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  • Avg. price: ~£260
  • PassMark benchmark result: 13087
  • N. of physical cores: 8
  • CPU boost clock speed: 4.4 GHz

Intel Core i9 9900T review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

5.5

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%

5.5

Technical Score

10.0%

?

User score

Good
5.5

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%

5.3

Cache & Architecture

10.0%

5.6

Memory & PCIe

7.0%

6.9

Power & Thermal

4.0%

7.6

Platform

1.0%

6.9

Integrated Graphics

Good
?

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%

?

User reviews

30.0%

?

Popularity

  • 4.2
    Gaming

    Score components:

    30.0%

    4.1

    PassMark single-core benchmark score

    25.0%

    4.2

    Geekbench 6 single-core benchmark score

    20.0%

    5.8

    CPU boost clock speed

    17.0%

    3.3

    L3 cache

    8.0%

    3.5

    N. of physical cores

  • 6.3
    Video editing

    Score components:

    45.0%

    9.0

    Geekbench 6 multi-core benchmark score

    20.0%

    3.5

    N. of physical cores

    20.0%

    5.2

    CPU threads

    15.0%

    3.3

    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 i9-9900T is a high-end, 9th-generation 14nm desktop processor from the Coffee Lake Refresh family, featuring 8 cores, 16 threads, and 16MB of Smart Cache. Designed for the LGA 1151 socket, it prioritises energy efficiency with a remarkably low 35W TDP, a base clock speed of 2.10 GHz, and a maximum turbo boost frequency of 4.40 GHz. Its main advantages include exceptional multi-core performance for power-constrained environments like small form factor PCs or all-in-one systems, support for up to 128GB of DDR4-2666 memory, and integrated Intel UHD Graphics 630. However, its primary drawbacks are significantly lower clock speeds compared to the 'K' series models, resulting in reduced single-core performance, and its locked multiplier which prevents traditional overclocking.

Technical Specifications of processor Intel Core i9 9900T

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%

?

Performance

18.0%

?

Cache & Architecture

10.0%

?

Memory & PCIe

7.0%

?

Power & Thermal

4.0%

?

Platform

1.0%

?

Integrated Graphics

5.5
Intel Core i9 9900T has a technical score of 5.48 points, which is higher than that of 55% 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%

0.0

User reviews

30.0%

1.0

Popularity

?
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.
1.0
Intel Core i9 9900T has a popularity of 1 points, which is higher than 0% 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%

5.5

Overall score

40.0%

9.2

Price

6.6
Intel Core i9 9900T 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

desktop
Intel Core i9 9900T 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

LGA1151
Intel Core i9 9900T uses the LGA1151 CPU socket, which is newer than that of 60.1% of processors and equal to that of 9.7% 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

Z390, Z370, Q370, H370, B365, B360, H310
Intel Core i9 9900T supports Z390, Z370, Q370, H370, B365, B360, H310 chipsets, which is broader compatibility than 57.1% of processors and equal to that of 4.4% 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 9900T 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+

8
Intel Core i9 9900T has 8 CPU cores, which is more than 63.4% of processors and equal to 13.6% 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+

16
Intel Core i9 9900T offers 16 CPU threads, which is more than 71.1% of processors and equal to 13.9% 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 9900T 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

4.4 GHz
Intel Core i9 9900T reaches a boost clock of 4.4 GHz which is higher than that of 51.2% of processors and equal to that of 5.1% 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 2.1 GHz
Intel Core i9 9900T has a base clock of 8x2.1 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 9900T 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 9900T 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

16 MB
Intel Core i9 9900T has an L3 cache of 16 MB which is larger than that of 64.2% of processors and equal to that of 12.7% 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

2 MB
Intel Core i9 9900T has an L2 cache of 2 MB which is smaller than that of 51.3% of processors and equal to that of 11.1% 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

512 KB
Intel Core i9 9900T has an L1 cache of 512 KB which is larger than that of 63.6% of processors and equal to that of 9.5% 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 9900T 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 9900T supports memory speeds up to 2,666 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 9900T supports JEDEC memory speeds up to DDR4-2,666 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

N/A
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 9900T 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

yes
Intel Core i9 9900T 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 630
Intel Core i9 9900T uses the Intel UHD Graphics 630 integrated GPU, which is more advanced than that in 44.3% and equal to that in 8.3%.
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

24
Intel Core i9 9900T has 24 GPU execution units, which is more than 49.2% of processors and equal to 21.6% 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

350 MHz
Intel Core i9 9900T has an integrated GPU clock of 350 MHz which is higher than that of 43.5% of processors and equal to that of 29.6% 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/encode), H.265 (HW decode/encode), VP9 (HW decode), JPEG (HW decode/encode)
Intel Core i9 9900T supports H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode), JPEG (HW decode/encode) media codecs, which is broader support than 72.1% of processors and equal to 2.9% of processors.
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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

35 W
Intel Core i9 9900T has a TDP of 35 W which is lower than that of 51.8% of processors and equal to that of 14.8% 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

35 W
Intel Core i9 9900T has a base power of 35 W which is lower than that of 51.7% of processors and equal to that of 15.1% 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

?
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

28 seconds
Intel Core i9 9900T has a turbo duration of 28 seconds which is longer than that of 3.8% of processors and equal to that of 85% of processors.
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

yes
Intel Core i9 9900T supports configurable TDP. 52.9% support configurable TDP.
cTDP: 25 W
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Intel Core i9 9900T vs the average processor

  • 8 more CPU threads
    Intel Core i9 9900T has more CPU threads than the average processor (16 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 9900T has more CPU threads than the average processor (16 vs 8). The average processor has 8 CPU threads.16 vs 8
  • Supports memory overclocking
    Intel Core i9 9900T supports memory overclocking, the average processor does not.
    What it is: Allows memory speeds beyond official stock settings through manual tuning or profile-based overclocking.
    When it matters: When you want to push RAM performance higher than stock support allows, especially in enthusiast or gaming builds.

    Importance: MEDIUM

    Intel Core i9 9900T supports memory overclocking, the average processor does not.
  • 40.9% better multi-core performance
    Intel Core i9 9900T has a higher multi-core performance than the average processor (3,920 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 9900T has a higher multi-core performance than the average processor (3,920 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.3,920 vs 2,783
  • 2x more memory capacity
    Intel Core i9 9900T has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
    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

    Intel Core i9 9900T has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.128 GB vs 64 GB
  • 2 more CPU cores
    Intel Core i9 9900T has more CPU cores than the average processor (8 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 9900T has more CPU cores than the average processor (8 vs 6). The average processor has 6 CPU cores.8 vs 6
  • 2x larger L3 cache
    Intel Core i9 9900T has a higher L3 cache than the average processor (16 MB vs 8 MB). The average processor has L3 cache of 8 MB.
    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

    Intel Core i9 9900T has a higher L3 cache than the average processor (16 MB vs 8 MB). The average processor has L3 cache of 8 MB.16 MB vs 8 MB
  • Modern CPU socket
    Intel Core i9 9900T uses a more modern CPU socket than the average processor (LGA1151 vs FP2).
    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

    Intel Core i9 9900T uses a more modern CPU socket than the average processor (LGA1151 vs FP2).LGA1151 vs FP2
  • 22.2% lower base power
    Intel Core i9 9900T has a lower base power draw than the average processor (35 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 9900T has a lower base power draw than the average processor (35 W vs 45 W). The average processor has a base power draw of 45 W.35 W vs 45 W
  • Modern CPU socket
    Intel Core i9 9900T uses a more modern CPU socket than the average processor (LGA1151 vs FP2).
  • 8 more CPU threads
    Intel Core i9 9900T has more CPU threads than the average processor (16 vs 8). The average processor has 8 CPU threads.
  • 40.9% better multi-core performance
    Intel Core i9 9900T has a higher multi-core performance than the average processor (3,920 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 2 more CPU cores
    Intel Core i9 9900T has more CPU cores than the average processor (8 vs 6). The average processor has 6 CPU cores.
  • 2x larger L3 cache
    Intel Core i9 9900T has a higher L3 cache than the average processor (16 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • More advanced microarchitecture
    Intel Core i9 9900T uses a more advanced microarchitecture than the average processor (Coffee Lake Refresh vs Kaby Lake).
  • 33.3% larger L1 cache
    Intel Core i9 9900T has a higher L1 cache than the average processor (512 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • Supports memory overclocking
    Intel Core i9 9900T supports memory overclocking, the average processor does not.
  • 2x more memory capacity
    Intel Core i9 9900T has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
  • 22.2% lower base power
    Intel Core i9 9900T has a lower base power draw than the average processor (35 W vs 45 W). The average processor has a base power draw of 45 W.

Total
Platform
Performance
Cache & Architecture
Memory & PCIe
Power & Thermal
  • Narrower instruction support
    Intel Core i9 9900T supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
  • No crypto acceleration
    Intel Core i9 9900T does not include crypto acceleration, the average processor does.
  • 7.2% lower Cinebench R20 single-core score
    Intel Core i9 9900T has a lower Cinebench R20 single-core score than the average processor (449 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • 7 lower clock multiplier
    Intel Core i9 9900T has a lower clock multiplier than the average processor (21 vs 28). The average processor has a clock multiplier of 28.
  • 16.7% larger process node
    Intel Core i9 9900T has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 50% less L2 per core
    Intel Core i9 9900T has less L2 cache per core than the average processor (0.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 20% smaller L2 cache
    Intel Core i9 9900T has a lower L2 cache than the average processor (2 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 9.2% lower memory bandwidth
    Intel Core i9 9900T has a lower memory bandwidth than the average processor (41.6 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • 9.1% lower memory speed
    Intel Core i9 9900T 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.
  • Narrower instruction support
    Intel Core i9 9900T supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
    What it is: The supported CPU instruction sets and extensions.
    When it matters: When you run software that depends on specific CPU instructions.

    Importance: MEDIUM

    Intel Core i9 9900T supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA
  • 16.7% larger process node
    Intel Core i9 9900T 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 9900T 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
  • 50% less L2 per core
    Intel Core i9 9900T has less L2 cache per core than the average processor (0.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
    What it is: The amount of L2 cache available to each CPU core.
    When it matters: When you are comparing per-core cache resources in deeper architectural analysis.

    Importance: LOW

    Good value: >=1 MB/core

    Intel Core i9 9900T has less L2 cache per core than the average processor (0.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.0.25 MB/core vs 0.5 MB/core
  • 7.2% lower Cinebench R20 single-core score
    Intel Core i9 9900T has a lower Cinebench R20 single-core score than the average processor (449 vs 484). The average processor scores 484 in Cinebench R20 single-core.
    What it is: A Cinebench R20 benchmark score that reflects single-core CPU performance.
    When it matters: When you care about lighter workloads, interface responsiveness, or software that still depends heavily on one fast core.

    Importance: HIGH

    Good value: >600

    Intel Core i9 9900T has a lower Cinebench R20 single-core score than the average processor (449 vs 484). The average processor scores 484 in Cinebench R20 single-core.449 vs 484
  • No crypto acceleration
    Intel Core i9 9900T does not include crypto acceleration, the average processor does.
    What it is: Built-in hardware support for accelerating encryption and cryptographic tasks.
    When it matters: When encryption speed or secure workloads matter to you.

    Importance: LOW

    Intel Core i9 9900T does not include crypto acceleration, the average processor does.AES vs AES, SHA
  • 20% smaller L2 cache
    Intel Core i9 9900T has a lower L2 cache than the average processor (2 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 9900T has a lower L2 cache than the average processor (2 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.2 MB vs 2.5 MB
  • 7 lower clock multiplier
    Intel Core i9 9900T has a lower clock multiplier than the average processor (21 vs 28). The average processor has a clock multiplier of 28.
    What it is: The ratio used to derive CPU frequency from the base clock.
    When it matters: When you tune or compare overclocking behavior.

    Importance: LOW

    Good value: >33

    Intel Core i9 9900T has a lower clock multiplier than the average processor (21 vs 28). The average processor has a clock multiplier of 28.21 vs 28
  • 9.2% lower memory bandwidth
    Intel Core i9 9900T has a lower memory bandwidth than the average processor (41.6 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
    What it is: The maximum theoretical memory bandwidth the processor can support.
    When it matters: When memory-heavy workloads matter to you.

    Importance: MEDIUM

    Good value: >75 GB/s

    Intel Core i9 9900T has a lower memory bandwidth than the average processor (41.6 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.41.6 GB/s vs 45.8 GB/s
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Graphic comparison of Intel Core i9 9900T and other processors

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Third-party reviews

What customers like about Intel Core i9 9900T?

  • Extremely low power consumption for an i9 (35W TDP)
  • Excellent for Small Form Factor (SFF) builds and mini-PCs
  • Maintains 8 cores and 16 threads for strong multi-threaded tasks
  • Stays cool even under load, making it suitable for fanless or quiet builds
  • Strong efficiency (performance per watt) compared to the 9900K
  • Integrated UHD 630 graphics allows for use without a dedicated GPU
  • Cheaper alternative to the 9900K when bought as an engineering sample (ES)

What customers dislike about Intel Core i9 9900T?

  • Significantly lower base and boost clock speeds than the 9900K/9900
  • Lower single-core performance impacts gaming and snappy app starts
  • Difficult to find at retail; often only available as tray or OEM parts
  • Locked multiplier prevents any traditional overclocking
  • Limited to PCIe Gen 3.0, which can bottleneck modern high-end GPUs
  • Engineering samples (ES) may have stability issues or disabled features
  • Performance is closer to older 6-core chips in heavy workloads

Expert reviews

V
valid.x86.fr
N/A
CPU-Z Benchmark for Intel Core i9-9900T (16T)

The AMD Ryzen 9 7950X3D (validation 6ltxaz/16) is a 16-core, 32-thread Zen 4 processor featuring 3D V-Cache technology and 128 MB of L3 cache, operating on the AM5 platform with DDR5 memory. It achieves boost clocks up to 5.7 GHz with a 120W TDP, offering superior gaming performance in cache-sensitive titles compared to the Intel Core i9-13900K, alongside 5nm efficiency and PCIe 5.0...Read more

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C
comptoir-hardware.com
04/10/2019
Review: Core i9-9900T - Le Comptoir du Hardware

The Comptoir du Hardware review highlights the Intel Core i9-9900T as a unique 8-core/16-thread "Coffee Lake Refresh" CPU limited to a strict 35W TDP, designed for maximum efficiency in SFF or fanless systems. While offering 16MB L3 cache, the chip relies on lower clock speeds (2.1-4.4 GHz) to maintain thermal efficiency. Pros include low power consumption, minimal heating, and high...Read more

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N
notebookcheck.org
10/04/2020
Passively Cooled Core i9: Impact Display Solutions IMP-3654-B1-R Mini-PC Review

The Impact Display Solutions IMP-3654-B1-R is a passively cooled, industrial-grade mini PC featuring a 9th-Gen Intel Core i9-9900T processor housed in a heavy-duty anodized red aluminum chassis designed for 24/7 reliability. The system excels in thermal management, keeping the 35W CPU stable with no fans while maintaining low idle power consumption of 6W to 9W. While offering a...Read more

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Video reviews

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