Intel Core i9-11900KB
Intel Core i9-11900KF
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Intel Core i9-11900KB vs Intel Core i9-11900KF. Specifications, performance, tests

Overall score
star star star star star
Released
Q2/2021
Intel Core i9-11900KB
Intel Core i9-11900KB
Released
Q1/2021
Overall score
star star star star star
Intel Core i9-11900KF
Intel Core i9-11900KF

What's the best choice Intel Core i9-11900KB or Intel Core i9-11900KF? Which processor is faster?

We have prepared a comparison to help you choose the best processor. Compare their specifications and benchmarks.

Intel Core i9-11900KB has a maximum frequency of 3.30 GHz. 8 Cores. Power consumption of 65 W. Released in Q2/2021.

Intel Core i9-11900KF has a maximum frequency of 3.50 GHz. 8 Cores. Power consumption of 125 W. Released in Q1/2021.

Differences

  • Place in the overall ranking

    (based on several benchmarks)

    341 left arrow score
  • Performance per watt

    times less performance per watt

    65 W left arrow 125 W

Positions in all rankings

Common positions Intel Core i9-11900KB CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    69 place
  • Cinebench R23 (Multi-Core)
    141 place
  • Cinebench R20 (Single-Core)
    59 place
  • Cinebench R20 (Multi-Core)
    136 place
  • Cinebench R15 (Single-Core)
    38 place
  • Cinebench R15 (Multi-Core)
    128 place
  • Geekbench 5, 64bit (Single-Core)
    66 place
  • Geekbench 5, 64bit (Multi-Core)
    985 place
  • iGPU - FP32 Performance (Single-precision GFLOPS)
    464 place
  • Blender 2.81 (bmw27)
    147 place
  • Geekbench 6 (Single-Core)
    110 place
  • Place in the overall ranking

    (based on several benchmarks)

    168 left arrow score
  • Higher clock speed

    Around 6% better clock speed

    3.50 GHz left arrow 3.30 GHz

Positions in all rankings

Common positions Intel Core i9-11900KF CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    65 place
  • Cinebench R23 (Multi-Core)
    76 place
  • Cinebench R20 (Single-Core)
    50 place
  • Cinebench R20 (Multi-Core)
    67 place
  • Cinebench R15 (Single-Core)
    33 place
  • Cinebench R15 (Multi-Core)
    91 place
  • Geekbench 5, 64bit (Single-Core)
    63 place
  • Geekbench 5, 64bit (Multi-Core)
    984 place
  • Monero Hashrate kH/s
    42 place
  • Estimated results for PassMark CPU Mark
    125 place
  • Geekbench 6 (Single-Core)
    5 place

Specifications

Technical data
Intel Core i9-11900KB Intel Core i9-11900KB
Intel Core i9-11900KF Intel Core i9-11900KF
CPU family and group

Background information about the processors being compared, series, generation and market segment.

  • Segment
    Mobile left arrow Desktop / Server
  • Family
    Intel Core i9 left arrow Intel Core i9
  • Generation
    11 left arrow 11
  • CPU group
    Intel Core i 11000H left arrow Intel Core i 11000
  • Predecessor
    -- left arrow Intel Core i9-10900KF
  • Successor
    -- left arrow Intel Core i9-12900KF
CPU Technical specs

Basic parameters such as number of cores, number of threads, base and turbo frequency, and cache size. These parameters indirectly tell about the speed of the processor, the higher they are the better.

  • Frequency
    3.30 GHz left arrow 3.50 GHz
  • CPU Cores
    8 left arrow 8
  • Turbo (1 Core)
    5.30 GHz left arrow 5.30 GHz
  • CPU Threads
    16 left arrow 16
  • Turbo (8 Cores)
    4.90 GHz left arrow 4.80 GHz
  • Hyperthreading
    Yes left arrow Yes
  • Overclocking
    Yes left arrow Yes
  • Core architecture
    normal left arrow normal
IGPU

Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.

  • GPU name
    Intel UHD Graphics 910 left arrow no iGPU
  • GPU frequency
    0.35 GHz left arrow
  • GPU (Turbo)
    1.45 GHz left arrow No turbo
  • Execution units
    32 left arrow
  • Shader
    256 left arrow
  • Max. displays
    3 left arrow
  • Generation
    11 left arrow
  • DirectX Version
    12 left arrow
  • Technology
    10 nm left arrow
Hardware codec support

Built-in codecs used to encode and decode content. Significantly speeds up the required operations.

  • h265 / HEVC (8 bit)
    Decode / Encode left arrow No
  • h265 / HEVC (10 bit)
    Decode / Encode left arrow No
  • h264
    Decode / Encode left arrow No
  • VP9
    Decode / Encode left arrow No
  • VP8
    Decode / Encode left arrow No
  • AV1
    No left arrow No
  • AVC
    Decode / Encode left arrow No
  • VC-1
    Decode left arrow No
  • JPEG
    Decode / Encode left arrow No
Memory specs & PCI

Types, channel quantity of RAM supported by Intel Core i9-11900KF and Intel Core i9-11900KB. Depending on the motherboards, higher or lower memory frequencies may be supported.

  • Memory type
    DDR4-3200 left arrow DDR4-3200
  • Max. Memory
    128 GB left arrow 128 GB
  • ECC
    No left arrow No
  • Memory channels
    2 left arrow 2
  • PCIe version
    3.0 left arrow 4.0
  • PCIe lanes
    16 left arrow 20
Encryption
  • AES-NI
    Yes left arrow Yes
Thermal Management

Compare the TDP requirements of TDP Intel Core i9-11900KB and Intel Core i9-11900KF to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

  • TDP (PL1)
    65 W left arrow 125 W
  • TDP (PL2)
    -- left arrow 251 W / 56 s
  • TDP down
    55 W left arrow 95 W
  • Tjunction max.
    100 °C left arrow 100 °C
Technologies and extensions

Architecture, interfaces, additional instructions supported by Intel Core i9-11900KB and Intel Core i9-11900KB, virtual machine technologies and process technology.

  • Instruction set (ISA)
    x86-64 (64 bit) left arrow x86-64 (64 bit)
  • Virtualization
    VT-x, VT-x EPT, VT-d left arrow VT-x, VT-x EPT, VT-d
  • ISA extensions
    SSE4.1, SSE4.2, AVX2, AVX-512 left arrow SSE4.1, SSE4.2, AVX2, AVX-512
  • L2-Cache
    4.00 MB left arrow 4.00 MB
  • L3-Cache
    20.00 MB left arrow 16.00 MB
  • Architecture
    Tiger Lake H left arrow Rocket Lake S
  • Technology
    10 nm left arrow 14 nm
  • Socket
    BGA 1787 left arrow LGA 1200
  • Release date
    Q2/2021 left arrow Q1/2021

Benchmarks

Performance tests CPUs

Based on the results of several benchmarks, you can more accurately estimate the difference in performance between Intel Core i9-11900KB and Intel Core i9-11900KF.

Compare the synthetic test values and choose the best processor!

Cinebench R23 (Single-Core)
Maxon's Cinebench R23 SC is a cross-platform test suite for macOs and Windows uses one CPU core, with no hypetrading
1663
Intel Core i9-11900KB
1686
Intel Core i9-11900KF
Cinebench R23 (Multi-Core)
Maxon's Cinebench R23 MC is a cross-platform test suite for macOs and Windows using a multi-core and hyperthreading
12264
Intel Core i9-11900KB
16211
Intel Core i9-11900KF
Cinebench R20 (Single-Core)
Cinebench R20 SC is a high load CPU test for long tasks on a desktop or notebook PC, uses one CPU core, with no hypetrading
640
Intel Core i9-11900KB
650
Intel Core i9-11900KF
Cinebench R20 (Multi-Core)
Cinebench R20 MC is a high load CPU test for long tasks on a desktop or notebook PC, using a multi-core and hyperthreading
4712
Intel Core i9-11900KB
6187
Intel Core i9-11900KF
Cinebench R15 (Single-Core)
The Cinebench R15 SC stresses the computing modules of a desktop or laptop computer to their limits and accurately determines the key performance parameters of the hardware
256
Intel Core i9-11900KB
262
Intel Core i9-11900KF
Cinebench R15 (Multi-Core)
The Cinebench R15 MC stresses the computing modules of a desktop or laptop computer to their limits and accurately determines the key performance parameters of the hardware
2144
Intel Core i9-11900KB
2515
Intel Core i9-11900KF
Geekbench 5, 64bit (Single-Core)
Geekbench 5 SC is a popular cross-platform performance test for desktop or mobile processors that uses system memory intensively
1878
Intel Core i9-11900KB
1878
Intel Core i9-11900KF

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