Intel Core i5-8250U vs Intel Core i5-8400T. 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 8
• CPU group
  Intel Core i 8000U Intel Core i 8000
• Predecessor
  -- Intel Core i5-7400T
• Successor
  -- Intel Core i5-9400T

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
  1.60 GHz 1.70 GHz
• CPU Cores
  4 6
• Turbo (1 Core)
  3.40 GHz 3.30 GHz
• CPU Threads
  8 6
• Hyperthreading
  Yes No
• Overclocking
  No 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 UHD Graphics 620 Intel UHD Graphics 630
• GPU frequency
  0.30 GHz 0.35 GHz
• GPU (Turbo)
  1.10 GHz 1.15 GHz
• Execution units
  24 24
• Shader
  192 192
• Max. GPU Memory
  64 GB 64 GB
• Max. displays
  3 3
• Generation
  9.5 9.5
• DirectX Version
  12 12
• Technology
  14 nm 14 nm
• Release date
  Q3/2016 Q4/2017

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

Types, channel quantity of RAM supported by Intel Core i5-8400T and Intel Core i5-8250U. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-2400 SO-DIMM DDR4-2666
• Max. Memory
  32 GB
• ECC
  No No
• Memory channels
  2 2
• PCIe version
  3.0 3.0
• PCIe lanes
  12 16

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i5-8250U and Intel Core i5-8400T to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  15 W 95 W

Architecture, interfaces, additional instructions supported by Intel Core i5-8250U and Intel Core i5-8250U, 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 9.00 MB
• Architecture
  Kaby Lake U Refresh Coffee Lake S
• Technology
  14 nm 14 nm
• Socket
  BGA 1356 LGA 1151-2
• Release date
  Q3/2017 Q2/2018