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

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

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

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

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 no iGPU
• GPU frequency
  0.35 GHz
• GPU (Turbo)
  1.45 GHz No turbo
• Execution units
  32
• Shader
  256
• Max. displays
  3
• Generation
  11
• DirectX Version
  12
• Technology
  10 nm

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

• h265 / HEVC (8 bit)
  Decode / Encode No
• h265 / HEVC (10 bit)
  Decode / Encode No
• h264
  Decode / Encode No
• VP9
  Decode / Encode No
• VP8
  Decode / Encode No
• AV1
  No No
• AVC
  Decode / Encode No
• VC-1
  Decode No
• JPEG
  Decode / Encode No

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 DDR4-3200
• Max. Memory
  128 GB 128 GB
• ECC
  No No
• Memory channels
  2 2
• PCIe version
  3.0 4.0
• PCIe lanes
  16 20

• AES-NI
  Yes Yes

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 125 W
• TDP (PL2)
  -- 251 W / 56 s
• TDP down
  55 W 95 W
• Tjunction max.
  100 °C 100 °C

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