Intel Xeon Gold 6338 vs AMD Epyc 7643. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  Intel Xeon Gold AMD Epyc
• Generation
  3 3
• CPU group
  Intel Xeon Gold 5300/6300 AMD Epyc 7003
• Predecessor
  -- AMD Epyc 7642

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
  2.00 GHz 2.30 GHz
• CPU Cores
  32 48
• Turbo (1 Core)
  3.20 GHz 3.60 GHz
• CPU Threads
  64 96
• 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
  no iGPU no iGPU
• GPU (Turbo)
  No turbo No turbo

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

• h265 / HEVC (8 bit)
  No No
• h265 / HEVC (10 bit)
  No No
• h264
  No No
• VP9
  No No
• VP8
  No No
• AV1
  No No
• AVC
  No No
• VC-1
  No No
• JPEG
  No No

Types, channel quantity of RAM supported by AMD Epyc 7643 and Intel Xeon Gold 6338. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-3200 DDR4-3200
• Max. Memory
  6144 GB
• ECC
  Yes Yes
• Memory channels
  8 8
• PCIe version
  4.0 4.0
• PCIe lanes
  64 128

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Xeon Gold 6338 and AMD Epyc 7643 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  205 W 280 W

Architecture, interfaces, additional instructions supported by Intel Xeon Gold 6338 and Intel Xeon Gold 6338, 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, AVX-512 SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L3-Cache
  48.00 MB 256.00 MB
• Architecture
  Ice Lake Milan (Zen 3)
• Technology
  10 nm 7 nm
• Socket
  LGA 4189 SP3
• Release date
  Q2/2021 Q1/2021