AMD Epyc 7251 vs Intel Core i7-9700. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  AMD Epyc Intel Core i7
• Generation
  1 9
• CPU group
  AMD Epyc 7001 Intel Core i 9000
• Predecessor
  -- Intel Core i7-8700
• Successor
  -- Intel Core i7-10700

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
  2.10 GHz 3.00 GHz
• CPU Cores
  8 8
• Turbo (1 Core)
  2.90 GHz 4.70 GHz
• CPU Threads
  16 8
• Turbo (8 Cores)
  2.90 GHz 3.80 GHz
• Hyperthreading
  Yes No
• 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
  no iGPU Intel UHD Graphics 630
• GPU frequency
  0.35 GHz
• GPU (Turbo)
  No turbo 1.20 GHz
• 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)
  No Decode / Encode
• h265 / HEVC (10 bit)
  No Decode / Encode
• h264
  No Decode / Encode
• VP9
  No Decode / Encode
• VP8
  No Decode / Encode
• AV1
  No No
• AVC
  No Decode / Encode
• VC-1
  No Decode
• JPEG
  No Decode / Encode

Types, channel quantity of RAM supported by Intel Core i7-9700 and AMD Epyc 7251. Depending on the motherboards, higher or lower memory frequencies may be supported.

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

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Epyc 7251 and Intel Core i7-9700 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

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

Architecture, interfaces, additional instructions supported by AMD Epyc 7251 and AMD Epyc 7251, virtual machine technologies and process technology.

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• Virtualization
  AMD-V, SVM VT-x, VT-x EPT, VT-d
• ISA extensions
  SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 SSE4.1, SSE4.2, AVX2
• L3-Cache
  32.00 MB 12.00 MB
• Architecture
  Naples (Zen) Coffee Lake S Refresh
• Technology
  14 nm 14 nm
• Socket
  SP3 LGA 1151-2
• Release date
  Q3/2017 Q2/2019