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

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

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

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
  3.50 GHz 3.30 GHz
• CPU Cores
  8 8
• Turbo (1 Core)
  5.30 GHz 5.30 GHz
• CPU Threads
  16 16
• Turbo (8 Cores)
  4.80 GHz 4.90 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 750 Intel UHD Graphics 910
• GPU frequency
  0.35 GHz 0.35 GHz
• GPU (Turbo)
  1.30 GHz 1.45 GHz
• Execution units
  32 32
• Shader
  256 256
• Max. displays
  3 3
• Generation
  12 11
• DirectX Version
  12 12
• Technology
  14 nm 10 nm
• Release date
  Q1/2021

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

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

Types, channel quantity of RAM supported by Intel Core i9-11900KB and Intel Core i9-11900K. 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
  4.0 3.0
• PCIe lanes
  20 16

• AES-NI
  Yes Yes

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

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

Architecture, interfaces, additional instructions supported by Intel Core i9-11900K and Intel Core i9-11900K, 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
  16.00 MB 20.00 MB
• Architecture
  Rocket Lake S Tiger Lake H
• Technology
  14 nm 10 nm
• Socket
  LGA 1200 BGA 1787
• Release date
  Q1/2021 Q2/2021