Intel Core i9-11900K: specs and benchmarks

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Summary

Intel started Core i9-11900K sales 30 April 2021. This is a Rocket Lake architecture desktop processor primarily aimed at office systems. It has 8 cores and 16 threads, and is based on 14 nm manufacturing technology, with a max turbo frequency of 5200 MHz and an unlocked multiplier.

Compatibility-wise, this is FCLGA1200 processor with a TDP of 125 Watt and a maximum temperature of 72 °C. It supports DDR4 memory.

It provides poor benchmark performance at 20.17% of a leader's which is AMD EPYC 9654.

EPYC 9654EPYC9654
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General info

Core i9-11900K processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance ranking287
Value for money50.76
Market segmentDesktop processor
Architecture codenameRocket Lake (2021)
Release date30 April 2021 (2 years old)
Current price$310 of 15710 (Xeon Platinum 8276L)
Value for money

Performance per price, higher is better.

Technical specs

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores8 (Octa-Core)
Threads16
Base clock speed3.5 GHzof 4.7 (FX-9590)
Boost clock speed5.2 GHzof 6 (Core i9-13900KS)
L1 cache64K (per core)of 7475.2 (Apple M2 Pro 10-Core)
L2 cache256K (per core)of 36864 (Apple M2 Max)
L3 cache16 MB (shared)of 768 (EPYC 7373X)
Chip lithography14 nmof 4 (Ryzen 9 7940HS)
Maximum core temperature100 °Cof 110 (Atom x7-E3950)
Maximum case temperature (TCase)72 °Cof 105 (Core i7-5950HQ)
64 bit support+
Windows 11 compatibility+
Unlocked multiplier+

Compatibility

Information on Core i9-11900K compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1of 8 (Opteron 842)
SocketFCLGA1200
Power consumption (TDP)125 Wattof 400 (Xeon Platinum 9282)

Technologies and extensions

Technological capabilities and additional instructions supported by Core i9-11900K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI+
AVX+
vPro+
Enhanced SpeedStep (EIST)+
Enhanced SpeedStep (EIST)+
Turbo Boost Technology2.0
Hyper-Threading Technology+
TSX+
Idle States+
Thermal Monitoring+
SIPP+
Turbo Boost Max 3.0+

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT+
EDB+
Secure Key+
Identity Protection+
SGX-
OS Guard+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d+
VT-x+
EPT+

Memory specs

Types, maximum amount and channel number of RAM supported by Core i9-11900K's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory typesDDR4of 5600 (Ryzen 9 7940HS)
Maximum memory size128 GBof 786 (Xeon E5-2670 v3)
Max memory channels2of 12 (Xeon Platinum 9221)
Maximum memory bandwidth50 GB/sof 460.8 (EPYC 9124)
ECC memory support-

Graphics specifications

General parameters of a GPU integrated into Core i9-11900K.

Integrated graphics cardIntel UHD Graphics 750
Max video memory64 GB
Quick Sync Video+
Clear Video+
Clear Video HD+
Graphics max frequency1.3 GHz
Execution Units32
InTru 3D+

Graphics interfaces

Available interfaces and connections of Core i9-11900K's integrated GPU.

Number of displays supported3

Graphics image quality

Maximum display resolutions supported by Core i9-11900K's integrated GPU, including resolutions over different interfaces.

4K resolution support+
Max resolution over HDMI 1.44096x2160@60Hz
Max resolution over eDP5120 x 3200 @60Hz
Max resolution over DisplayPort5120 x 3200 @60Hz

Graphics API support

APIs supported by Core i9-11900K's integrated GPU, sometimes API versions are included.

DirectX12.1
OpenGL4.5

Peripherals

Specifications and connection types of supported peripherals.

PCIe version4.0of 5 (Core i9-12900K)
PCI Express lanes20of 128 (EPYC 7551P)

Benchmark performance

Single-core and multi-core benchmark results of Core i9-11900K. Overall benchmark performance is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i9-11900K 20.17

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

i9-11900K 25421

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 41%

i9-11900K 2329

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 41%

i9-11900K 10697

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Benchmark coverage: 20%

i9-11900K 10545

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Benchmark coverage: 20%

i9-11900K 62024

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Benchmark coverage: 17%

i9-11900K 27

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Benchmark coverage: 15%

i9-11900K 2379

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Benchmark coverage: 15%

i9-11900K 255

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

Benchmark coverage: 14%

i9-11900K 3.1

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

Benchmark coverage: 13%

i9-11900K 13

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

Benchmark coverage: 13%

i9-11900K 9030

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

Benchmark coverage: 13%

i9-11900K 310

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

Benchmark coverage: 13%

i9-11900K 137

Gaming performance

Relative perfomance

Overall Core i9-11900K performance compared to nearest competitors among desktop CPUs.


AMD equivalent

According to our data, the closest AMD alternative to Core i9-11900K is Ryzen Threadripper 2920X, which is slower by 2% and lower by 10 positions in our ranking.

Ryzen Threadripper 2920XRyzen Threadripper2920X
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Here are some closest AMD rivals to Core i9-11900K:

Similar processors

Here is our recommendation of several processors that are more or less close in performance to the one reviewed.

i9-11900KFCore i911900KF
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i5-13400Core i513400
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i5-13400FCore i513400F
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i9-9920XCore i99920X
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Ryzen Threadripper 2920XRyzen Threadripper2920X
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Ryzen 7 5800Ryzen 75800
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Recommended GPUs

People consider these graphics cards to be good for Core i9-11900K, according to our PC configuration statistics.

These are the fastest graphics cards for Core i9-11900K in our user configuration statistics. There is a total of 5459 configurations based on Core i9-11900K in our database.

RTX 4090 GeForce RTX 4090
2.2% (120/5459)
RTX 4080 GeForce RTX 4080
0.5% (29/5459)
RX 7900 XTX Radeon RX 7900 XTX
0.07% (4/5459)
RTX 3090 Ti GeForce RTX 3090 Ti
4.3% (233/5459)
RX 7900 XT Radeon RX 7900 XT
0.02% (1/5459)
RX 6950 XT Radeon RX 6950 XT
0.07% (4/5459)
RTX 3080 Ti GeForce RTX 3080 Ti
12.4% (678/5459)
RX 6900 XT Radeon RX 6900 XT
1.1% (62/5459)
RTX 3090 GeForce RTX 3090
20.5% (1121/5459)

User ratings: view and submit

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.


3.5 780 votes

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Questions and comments

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