Intel Core i7-4790K vs Intel Core i7-6800K. 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
  4 6
• CPU group
  Intel Core i 4000 Intel Core i 6000

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
  4.00 GHz 3.40 GHz
• CPU Cores
  4 6
• Turbo (1 Core)
  4.40 GHz 3.60 GHz
• CPU Threads
  8 12
• 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 HD Graphics 4600 no iGPU
• GPU frequency
  0.35 GHz
• GPU (Turbo)
  1.25 GHz No turbo
• Execution units
  20
• Shader
  160
• Max. GPU Memory
  2 GB --
• Max. displays
  3
• Generation
  7.5
• DirectX Version
  11.1
• Technology
  22 nm
• Release date
  Q2/2013

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

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

Types, channel quantity of RAM supported by Intel Core i7-6800K and Intel Core i7-4790K. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-2133DDR4-2400
• Max. Memory
  32 GB 128 GB
• ECC
  No No
• Memory channels
  2 4
• PCIe version
  3.0 3.0
• PCIe lanes
  16 28

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i7-4790K and Intel Core i7-6800K to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  88 W 140 W
• Tjunction max.
  -- 100 °C

Architecture, interfaces, additional instructions supported by Intel Core i7-4790K and Intel Core i7-4790K, 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
  8.00 MB 15.00 MB
• Architecture
  Devils Canyon S Skylake S
• Technology
  22 nm 14 nm
• Socket
  LGA 1150 LGA 2011-3
• Release date
  Q2/2014 Q2/2016