Intel Core i7-8700K vs Intel Core i9-12900H. Specifications, performance, tests

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

• Segment
  Desktop / Server Mobile
• Family
  Intel Core i7 Intel Core i9
• Generation
  8 12
• CPU group
  Intel Core i 8000 Intel Core i 12000H
• Predecessor
  Intel Core i7-7700K Intel Core i9-11900H
• 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 2.50 GHz
• Turbo (1 Core)
  4.70 GHz 5.00 GHz
• Hyperthreading
  Yes Yes
• Overclocking
  Yes No
• Core architecture
  normal hybrid (big.LITTLE)

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 Intel Iris Xe Graphics 96 (Alder Lake)
• GPU frequency
  0.35 GHz 0.40 GHz
• GPU (Turbo)
  1.20 GHz 1.45 GHz
• Execution units
  24 96
• Shader
  192 768
• Max. GPU Memory
  64 GB 64 GB
• Max. displays
  3 4
• Generation
  9.5 13
• Technology
  14 nm 10 nm
• Release date
  Q4/2017 Q1/2022

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 / Encode Decode
• AV1
  No Decode
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by Intel Core i9-12900H and Intel Core i7-8700K. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-2666 DDR4-3200DDR5-4800LPDDR4X-4266LPDDR5-5200
• Max. Memory
  128 GB 64 GB
• ECC
  No No
• Memory channels
  2 2

Compare the TDP requirements of TDP Intel Core i7-8700K and Intel Core i9-12900H to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  95 W 45 W
• TDP (PL2)
  -- 115 W
• Tjunction max.
  -- 100 °C

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, AVX2+
• L2-Cache
  -- 11.50 MB
• L3-Cache
  12.00 MB 24.00 MB
• Architecture
  Coffee Lake S Alder Lake H
• Technology
  14 nm 10 nm
• Socket
  LGA 1151-2 BGA 1744
• Release date
  Q4/2017 Q1/2022