Intel Core i5-8259U vs Intel Core i5-10400F. Specifications, performance, tests

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

• Segment
  Mobile Desktop / Server
• Family
  Intel Core i5 Intel Core i5
• Generation
  8 10
• CPU group
  Intel Core i 8000U Intel Core i 10000
• Predecessor
  -- Intel Core i5-9400F
• Successor
  -- Intel Core i5-11400F

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
  2.30 GHz 2.90 GHz
• CPU Cores
  4 6
• Turbo (1 Core)
  3.80 GHz 4.30 GHz
• CPU Threads
  8 12
• Hyperthreading
  Yes Yes
• Overclocking
  No No
• 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 Iris Plus Graphics 655 no iGPU
• GPU frequency
  0.30 GHz
• GPU (Turbo)
  1.05 GHz No turbo
• Execution units
  48
• Shader
  384
• Max. GPU Memory
  32 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 i5-10400F and Intel Core i5-8259U. Depending on the motherboards, higher or lower memory frequencies may be supported.

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

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i5-8259U and Intel Core i5-10400F to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  28 W 65 W
• Tjunction max.
  -- 100 °C

Architecture, interfaces, additional instructions supported by Intel Core i5-8259U and Intel Core i5-8259U, 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
  6.00 MB 12.00 MB
• Architecture
  Coffee Lake U Comet Lake S
• Technology
  14 nm 14 nm
• Socket
  BGA 1528 LGA 1200
• Release date
  Q2/2018 Q2/2020