Intel Core i9-11900K: specs and benchmarks

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Intel Core i9-11900K
Intel Core i9-11900K
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  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Year of release 2021
Performance 23.49

Summary

Intel started Intel Core i9-11900K sales 16 March 2021. This is 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

23.49%

of a leader's which is AMD Ryzen Threadripper PRO 5995WX.

General info

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

Place in performance rating148
Value for money35.82
Market segmentDesktop processor
Architecture codenameRocket Lake (2021)
Release date16 March 2021 (1 year ago)
Price now$546 of 14999 (Xeon Platinum 9282)
Value for money

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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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 5.5 (Core i9-12900KS)
L1 cache64K (per core)of 1536 (EPYC Embedded 3401)
L2 cache256K (per core)of 12288 (Core 2 Quad Q9550)
L3 cache16 MB (shared)of 32 (Ryzen Threadripper 1998)
Chip lithography14 nmof 5 (Apple M1)
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
Thermal design power (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)+
Turbo Boost Technology2.0
Hyper-Threading Technology+
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 4800 (Ryzen 9 6980HX)
Maximum memory size128 GBof 786 (Xeon E5-2670 v3)
Max memory channels2of 12 (Xeon Platinum 9221)
Maximum memory bandwidth50 GB/sof 281.6 (Xeon Platinum 9221)
ECC memory support-

Graphics specifications

General parameters of 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 3 (Core i7-7700K)
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.


Overall 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 23.49
  • Cinebench 10 32-bit single-core
  • WinRAR 4.0
  • TrueCrypt AES
  • x264 encoding pass 2
  • x264 encoding pass 1
  • Cinebench 15 64-bit multi-core
  • Cinebench 15 64-bit single-core
  • Cinebench 11.5 64-bit multi-core
  • Cinebench 11.5 64-bit single-core
  • Cinebench 10 32-bit multi-core
  • Passmark
  • GeekBench 5 Single-Core
  • GeekBench 5 Multi-Core

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.

i9-11900K 10545

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.

i9-11900K 9030

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.

i9-11900K 13

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.  

i9-11900K 137

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.  

i9-11900K 310

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core (sometimes called Multi-Thread) is a variant of Cinebench R15 which uses all the processor threads.

i9-11900K 2397

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.

i9-11900K 256

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.

i9-11900K 27

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.

i9-11900K 3.1

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.

i9-11900K 62024

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.

i9-11900K 25560

GeekBench 5 Single-Core

i9-11900K 1821

GeekBench 5 Multi-Core

i9-11900K 10798

Relative perfomance

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


AMD equivalent

We believe that the nearest equivalent to Core i9-11900K from AMD is Ryzen 7 5800, which is nearly equal in speed and higher by 1 position in our rating.

AMD Ryzen 7 5800 Ryzen 7 5800
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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.

AMD Ryzen 7 5800 Ryzen 7 5800
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Intel Core i9-11900KF Core i9 11900KF
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Intel Core i9-9920X Core i9 9920X
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AMD Ryzen Threadripper 2920X Ryzen Threadripper 2920X
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AMD Ryzen 7 PRO 5750G Ryzen 7 PRO 5750G
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Intel Core i7-11700K Core i7 11700K
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Recommended graphics cards

These graphics cards are most commonly used with Core i9-11900K according to our statistics.

User rating

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