Intel Core i9-7940X vs Intel Core i9-11900. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  Intel Core i9 Intel Core i9
• Generation
  7 11
• CPU group
  Intel Core i 7000X Intel Core i 11000
• Predecessor
  -- Intel Core i9-10900

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
  3.10 GHz 2.50 GHz
• CPU Cores
  14 8
• Turbo (1 Core)
  4.30 GHz 5.20 GHz
• CPU Threads
  28 16
• Hyperthreading
  Yes Yes
• Overclocking
  Yes No
• 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
  no iGPU Intel UHD Graphics 750
• GPU frequency
  0.35 GHz
• GPU (Turbo)
  No turbo 1.30 GHz
• Execution units
  32
• Shader
  256
• Max. displays
  3
• Generation
  12
• DirectX Version
  12
• Technology
  14 nm
• Release date
  Q1/2021

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

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

Types, channel quantity of RAM supported by Intel Core i9-11900 and Intel Core i9-7940X. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-2666 DDR4-3200
• Max. Memory
  128 GB
• ECC
  No No
• Memory channels
  4 2
• PCIe version
  3.0 4.0
• PCIe lanes
  44 20

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i9-7940X and Intel Core i9-11900 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  165 W 65 W
• TDP (PL2)
  -- 224 W / 56 s
• Tjunction max.
  -- 100 °C

Architecture, interfaces, additional instructions supported by Intel Core i9-7940X and Intel Core i9-7940X, 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
• L3-Cache
  19.00 MB 16.00 MB
• Architecture
  Skylake X Rocket Lake S
• Technology
  14 nm 14 nm
• Socket
  LGA 2066 LGA 1200
• Release date
  Q4/2017 Q1/2021