Intel Core i5-8400T vs AMD Epyc 7551. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  Intel Core i5 AMD Epyc
• Generation
  8 1
• CPU group
  Intel Core i 8000 AMD Epyc 7001
• Predecessor
  Intel Core i5-7400T --
• Successor
  Intel Core i5-9400T AMD Epyc 7552

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
  1.70 GHz 2.00 GHz
• CPU Cores
  6 32
• Turbo (1 Core)
  3.30 GHz 3.00 GHz
• CPU Threads
  6 64
• Hyperthreading
  No Yes
• Overclocking
  Yes 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 UHD Graphics 630 no iGPU
• GPU frequency
  0.35 GHz
• GPU (Turbo)
  1.15 GHz No turbo
• Execution units
  24
• Shader
  192
• Max. GPU Memory
  64 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 AMD Epyc 7551 and Intel Core i5-8400T. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-2666 DDR4-2666
• ECC
  No Yes
• Memory channels
  2 8
• PCIe version
  3.0 3.0
• PCIe lanes
  16 128

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i5-8400T and AMD Epyc 7551 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  95 W 180 W

Architecture, interfaces, additional instructions supported by Intel Core i5-8400T and Intel Core i5-8400T, 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 AMD-V, SVM
• ISA extensions
  SSE4.1, SSE4.2, AVX2 SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L3-Cache
  9.00 MB 64.00 MB
• Architecture
  Coffee Lake S Naples (Zen)
• Technology
  14 nm 14 nm
• Socket
  LGA 1151-2 SP3
• Release date
  Q2/2018 Q3/2017