AMD Ryzen 9 7900X vs AMD Epyc 7551P. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 7000 AMD Epyc 7001
• Family
  Ryzen AMD Epyc
• Form Factor
  Desktops / Boxed Processor -
• Generation
  6 1
• Predecessor
  AMD Ryzen 9 5900X -
• Segment
  Desktop Desktop / Server
• Series
  Ryzen 7000 Series -

Core counts, threads, cache and clock modes describe the CPU configuration. Performance depends on the workload and comparable measured results.

• Base Frequency
  4.7 GHz 2 GHz
• Core architecture
  normal normal
• Core Configuration
  12x -
• CPU Cores
  12 32
• CPU Threads
  24 64
• Hyperthreading / SMT
  Yes Yes
• Max. Boost Clock
  5.6 GHz -
• Overclocking
  Yes No
• Turbo Frequency (1 Core)
  5.6 GHz 3 GHz
• Turbo Frequency (12 Cores)
  5.4 GHz -
• Turbo Frequency (32 Cores)
  - 2.55 GHz

Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.

• DirectX Version
  12 -
• Execution units
  2 -
• Generation
  9 -
• GPU Frequency
  2200 MHz -
• GPU name
  AMD Radeon Graphics no iGPU
• GPU Turbo
  2200 MHz No turbo
• Graphics Cores
  2 -
• Max. displays
  3 -
• Max. GPU Memory
  8 GB -
• Release date
  Q3/2022 -
• Shader
  128 -
• Technology
  5 nm -

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

• AV1
  No No
• H.264 / AVC
  Decode / Encode No
• h265 / HEVC (8 bit)
  Decode / Encode No
• h265 / HEVC (10 bit)
  Decode / Encode No
• JPEG
  Decode / Encode No
• VC-1
  Decode No
• VP8
  Decode / Encode No
• VP9
  Decode / Encode No

Types, channel quantity of RAM supported by AMD Epyc 7551P and AMD Ryzen 9 7900X. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  Yes Yes
• Max. Memory
  128 GB -
• Memory Bandwidth
  83.2 GB/s -
• Memory channels
  2 8
• Memory type
  DDR5 DDR4-2666
• PCIe
  5.0 x 24 -
• PCIe lanes
  - 128
• PCIe version
  - 3.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 7900X and AMD Epyc 7551P Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Default TDP
  170 W -
• Maximum Operating Temperature
  95 °C -
• TDP (PL1, legacy label)
  170 W 180 W
• TDP (PL2)
  230 W -

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 7900X and AMD Epyc 7551P, virtual machine technologies and process technology.

• Architecture
  Raphael (Zen 4) Naples (Zen)
• Chip design
  Chiplet -
• Codename
  Raphael AM5 -
• Documents
  Technical data sheet -
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L2-Cache
  12 MB -
• L3-Cache
  64 MB 64 MB
• Operating systems
  Windows 10, Windows 11, Linux -
• Part Number
  100-100000589WOF -
• Release date
  2022-09-27 Q3/2017
• Release price
  549 $ -
• Socket
  AM5 SP3
• Technology
  TSMC 5nm FinFET 14 nm
• Virtualization
  AMD-V, SVM AMD-V, SVM