Core i9-11900KB: specs and benchmarks

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Aggregate performance score

Core i9-11900KB
2021
8 cores / 16 threads, 65 Watt
14.42

Core i9-11900KB provides good benchmark performance at 14.42% of a leader's which is a 96-core EPYC 9655P.

Summary

Intel started Core i9-11900KB sales on May 2021 at a recommended price of $539. This is a Tiger Lake-H architecture desktop processor primarily aimed at office systems. It has 8 cores and 16 threads, and is based on 10 nm SuperFin manufacturing technology, with a max turbo frequency of 4900 MHz and an unlocked multiplier.

Compatibility-wise, this is FCBGA1787 processor with a TDP of 65 Watt and a maximum temperature of 72 °C. It supports DDR4 memory.

Primary details

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

Place in the ranking502
Place by popularitynot in top-100
Cost-effectiveness evaluation17.86
Market segmentDesktop processor
Power efficiency20.99of 100.00 (Ryzen Z1 Extreme)
Architecture codenameTiger Lake-H (2021)
Release dateMay 2021 (3 years ago)
Launch price (MSRP)$539of 17,906 (Xeon Platinum 8280L)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

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 speed3.3 GHzof 4.7 GHz (FX-9590)
Boost clock speed4.9 GHzof 6.2 GHz (Core i9-14900KS)
Bus rate8 GT/s
L1 cache80K (per core)of 80 KB (EPYC 9965)
L2 cache1.25 MB (per core)of 2 MB (Xeon 6980P)
L3 cache24 MB (shared)of 1152 MB (EPYC 9684X)
Chip lithography10 nm SuperFinof 3 nm (Apple M3 Max 16-Core)
Die size190 mm2
Maximum core temperature100 °Cof 110 °C (Atom x7-E3950)
Maximum case temperature (TCase)72 °Cof 105 °C (Core i7-5950HQ)
64 bit support+
Windows 11 compatibility-
Unlocked multiplier+

Compatibility

Information on Core i9-11900KB 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)
SocketFCBGA1787
Power consumption (TDP)65 Wattof 500 Watt (Xeon 6960P)

Technologies and extensions

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

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI+
AVX+
Enhanced SpeedStep (EIST)+
Speed Shift+
Hyper-Threading Technology+
Idle States+
Thermal Monitoring+
Flex Memory Access+
Turbo Boost Max 3.0+
Deep Learning Boost+

Security technologies

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

TXT+
EDB+
Secure Key+
Identity Protection+
SGXYes with Intel® ME
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 i9-11900KB's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory typesDDR4
Maximum memory size128 GBof 6 TiB (EPYC 9124)
Max memory channels2of 12 (Xeon Platinum 9221)
Maximum memory bandwidth51.2 GB/sof 460.8 GB/s (EPYC 9124)

Graphics specifications

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

Integrated graphics cardIntel UHD Graphics for 11th Gen Intel Processors
Quick Sync Video+
Graphics max frequency1.45 GHz
Execution Units32

Graphics interfaces

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

Number of displays supported4

Graphics image quality

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

4K resolution support+
Max resolution over HDMI 1.44096x2304@60Hz
Max resolution over eDP4096 x 2304@60Hz
Max resolution over DisplayPort7680x4320@60Hz

Graphics API support

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

DirectX12
OpenGL4.6

Peripherals

Specifications and connection types of supported peripherals.

PCIe version4.0of 5.0 (Core i9-12900K)
PCI Express lanes20of 128 (EPYC 7551P)

Benchmark performance

Single-core and multi-core benchmark results of Core i9-11900KB. 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.

i9-11900KB 14.42

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.

i9-11900KB 22911

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.

i9-11900KB 9538

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.

i9-11900KB 50665

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i9-11900KB 14961

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.

i9-11900KB 22

Cinebench 15 64-bit multi-core

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

i9-11900KB 2027

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.

i9-11900KB 247

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.

i9-11900KB 2.84

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.

i9-11900KB 11.6

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.

i9-11900KB 9584

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.  

i9-11900KB 106

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.  

i9-11900KB 273

Geekbench 5.5 Multi-Core

i9-11900KB 8924

Blender(-)

i9-11900KB 263

Geekbench 5.5 Single-Core

i9-11900KB 1656

7-Zip Single

i9-11900KB 5979

7-Zip

i9-11900KB 50152

WebXPRT 3

i9-11900KB 269

CrossMark Overall

i9-11900KB 1785

Gaming performance

Closest competitors

Core i9-11900KB's performance relative to its closest rivals among desktop CPUs.


Ryzen 7 3800X 100.97
Core i9-11900KB 100

AMD equivalent

According to our data, the closest AMD alternative to Core i9-11900KB is Ryzen 7 PRO 3700, which is nearly equal in speed and lower by 1 position in our ranking.

Here are some closest AMD rivals to Core i9-11900KB:

Ryzen 7 3800X 100.97
Core i9-11900KB 100

Similar processors

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

Recommended GPUs

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

These are the fastest graphics cards for Core i9-11900KB in our user configuration statistics. There is a total of 60 configurations using Core i9-11900KB in our database.

All comparisons with Core i9-11900KB

Community ratings

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


1.7 63 votes

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Questions & comments

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