Intel Core i7-8700K vs Intel Core i7-6950X. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  Intel Core i7 Intel Core i7 Extreme Edition
• Generation
  8 6
• CPU group
  Intel Core i 8000 Intel Core i 6000X
• Predecessor
  Intel Core i7-7700K --
• Successor
  Intel Core i7-9700KF --

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
  3.70 GHz 3.00 GHz
• CPU Cores
  6 10
• Turbo (1 Core)
  4.70 GHz 3.50 GHz
• CPU Threads
  12 20
• 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 630 no iGPU
• GPU frequency
  0.35 GHz
• GPU (Turbo)
  1.20 GHz No turbo
• Execution units
  24
• Shader
  192
• Max. GPU Memory
  64 GB --
• Max. displays
  3
• Generation
  9.5
• DirectX Version
  12
• Technology
  14 nm
• Release date
  Q4/2017

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 i7-6950X and Intel Core i7-8700K. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-2666 DDR4-2400
• Max. Memory
  128 GB
• ECC
  No No
• Memory channels
  2 4
• PCIe version
  3.0 3.0
• PCIe lanes
  16 40

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i7-8700K and Intel Core i7-6950X to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  95 W 140 W

Architecture, interfaces, additional instructions supported by Intel Core i7-8700K and Intel Core i7-8700K, 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 SSE4.1, SSE4.2, AVX2
• L3-Cache
  12.00 MB 25.00 MB
• Architecture
  Coffee Lake S Broadwell E
• Technology
  14 nm 14 nm
• Socket
  LGA 1151-2 LGA 2011-3
• Release date
  Q4/2017 Q2/2016