Intel Core i7-10700K vs Intel Core 2 Quad Q8400. Specifications, performance, tests

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

• CPU group
  Intel Core i 10000 Intel Core 2 Quad Q8000/Q9000
• Family
  Intel Core i7 Intel Core2 Duo
• Generation
  10 2
• Predecessor
  Intel Core i7-9700K No
• Segment
  Desktop / Server Desktop
• Successor
  Intel Core i7-11700K No

Core counts, threads, cache and clock modes describe the CPU configuration. Performance depends on the workload and comparable measured results.

• Base Frequency
  3.8 GHz 2.66 GHz
• Core architecture
  normal normal
• CPU Cores
  8 4
• CPU Threads
  16 4
• Hyperthreading / SMT
  Yes No
• Overclocking
  Yes No
• Turbo Frequency (1 Core)
  5.1 GHz No
• Turbo Frequency (8 Cores)
  4.9 GHz -
• Turbo Frequency (2 Cores)
  - No turbo

Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.

• DirectX Version
  12 -
• Execution units
  24 -
• Generation
  9.5 -
• GPU Frequency
  350 MHz -
• GPU name
  Intel UHD Graphics 630 -
• GPU Turbo
  1200 MHz -
• Max. displays
  3 -
• Max. GPU Memory
  64 GB -
• Release date
  Q4/2017 -
• Shader
  192 -
• Technology
  14 nm -

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

• AV1
  No -
• H.264 / AVC
  Decode / Encode -
• h265 / HEVC (8 bit)
  Decode / Encode -
• h265 / HEVC (10 bit)
  Decode / Encode -
• JPEG
  Decode / Encode -
• VC-1
  Decode -
• VP8
  Decode / Encode -
• VP9
  Decode / Encode -

Types, channel quantity of RAM supported by Intel Core 2 Quad Q8400 and Intel Core i7-10700K. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No No
• Max. Memory
  128 GB 16 GB
• Memory channels
  2 2
• Memory type
  DDR4-2933 DDR2-800 / DDR3-1066
• PCIe lanes
  16 -
• PCIe version
  3.0 -

• AES-NI
  Yes No

Compare the TDP requirements of TDP Intel Core i7-10700K and Intel Core 2 Quad Q8400 Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Maximum Operating Temperature
  100 °C 90 °C
• TDP (PL1, legacy label)
  125 W 95 W
• TDP (PL2)
  229 W / 56 s No
• TDP down
  95 W No
• TDP up
  - No

Architecture, interfaces, additional instructions supported by Intel Core i7-10700K and Intel Core 2 Quad Q8400, virtual machine technologies and process technology.

• Architecture
  Comet Lake S Yorkfield
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4.1, SSE4.2, AVX2 MMX, SSE2, SSE3, SSE4.1
• L2-Cache
  - 4 MB
• L3-Cache
  16 MB No
• Release date
  Q2/2020 Q2/2009
• Socket
  LGA 1200 LGA 775
• Technology
  14 nm 45 nm
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-d