Intel Core 2 Quad Q9400 vs Intel Core i5-11400. Specifications, performance, tests

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

• CPU group
  Intel Core 2 Quad Q8000/Q9000 Intel Core i 11000
• Family
  Intel Core2 Duo Intel Core i5
• Generation
  2 11
• Predecessor
  No Intel Core i5-10400
• Segment
  Desktop Desktop / Server
• Successor
  No Intel Core i5-12400

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

• Base Frequency
  2.66 GHz 2.6 GHz
• Core architecture
  normal normal
• CPU Cores
  4 6
• CPU Threads
  4 12
• Hyperthreading / SMT
  No Yes
• Overclocking
  No No
• Turbo Frequency (1 Core)
  No 4.4 GHz
• Turbo Frequency (2 Cores)
  No turbo -
• Turbo Frequency (6 Cores)
  - 4.2 GHz

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
  - 12
• GPU Frequency
  - 350 MHz
• GPU name
  - Intel UHD Graphics 730
• GPU Turbo
  - 1300 MHz
• Max. displays
  - 3
• Max. GPU Memory
  - 64 GB
• Release date
  - Q1/2021
• Shader
  - 192
• Technology
  - 14 nm

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

• AV1
  - Decode
• 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 i5-11400 and Intel Core 2 Quad Q9400. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No No
• Max. Memory
  16 GB 128 GB
• Memory channels
  2 2
• Memory type
  DDR2-800 / DDR3-1066 DDR4-3200
• PCIe lanes
  - 20
• PCIe version
  - 4.0

• AES-NI
  No Yes

Compare the TDP requirements of TDP Intel Core 2 Quad Q9400 and Intel Core i5-11400 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
  90 °C 100 °C
• TDP (PL1, legacy label)
  95 W 65 W
• TDP (PL2)
  No 154 W / 56 s
• TDP down
  No -
• TDP up
  No -

Architecture, interfaces, additional instructions supported by Intel Core 2 Quad Q9400 and Intel Core i5-11400, virtual machine technologies and process technology.

• Architecture
  Yorkfield Rocket Lake S
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  MMX, SSE2, SSE3, SSE4.1 SSE4.1, SSE4.2, AVX2, AVX-512
• L2-Cache
  6 MB 3 MB
• L3-Cache
  No 12 MB
• Release date
  Q3/2008 Q1/2021
• Socket
  LGA 775 LGA 1200
• Technology
  45 nm 14 nm
• Virtualization
  VT-x, VT-d VT-x, VT-x EPT, VT-d