AMD Ryzen Threadripper PRO 9955WX vs AMD Ryzen 5 PRO 9645. Specifications

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

• Family
  Ryzen Threadripper PRO Ryzen PRO
• Form Factor
  Desktops Desktops / Boxed Processor
• Segment
  Desktop Desktop
• Series
  Ryzen Threadripper PRO 9000 WX-Series Ryzen PRO 9000 Series

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

• Base Frequency
  4.5 GHz 3.9 GHz
• CPU Cores
  16 6
• CPU Threads
  32 12
• Max. Boost Clock
  5.4 GHz 5.4 GHz
• Overclocking
  Yes No

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
  None AMD Radeon Graphics
• GPU Frequency
  - 2200 MHz
• Graphics Cores
  - 2

Types, channel quantity of RAM supported by AMD Ryzen 5 PRO 9645 and AMD Ryzen Threadripper PRO 9955WX. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory channels
  8 2
• Memory type
  DDR5 DDR5
• PCIe
  PCIe 5.0 PCIe 5.0
• System Memory Specification
  6400 -

Compare the TDP requirements of TDP AMD Ryzen Threadripper PRO 9955WX and AMD Ryzen 5 PRO 9645 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
  350 W 65 W
• Maximum Operating Temperature
  95 °C 95 °C

Architecture, interfaces, additional instructions supported by AMD Ryzen Threadripper PRO 9955WX and AMD Ryzen 5 PRO 9645, virtual machine technologies and process technology.

• Codename
  Shimada Peak Granite Ridge AM5
• L2-Cache
  16 MB 6 MB
• L3-Cache
  64 MB 32 MB
• Official source
  https://www.amd.com/en/products/processors/workstations/ryzen-threadripper/9000-wx-series/amd-ryzen-threadripper-pro-9955wx.html https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-5-pro-9645.html
• Release date
  2025-07-23 2025-09-16
• Socket
  sTR5 AM5
• Technology
  TSMC 4nm FinFET TSMC 4nm FinFET
• Verified on
  2026-09-30 2026-09-30