AMD Ryzen Threadripper 3990X vs AMD Ryzen Threadripper Pro 3945WX. Specifications, performance, tests

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

• CPU group
  AMD Ryzen Threadripper 3000 AMD Ryzen Threadripper PRO 3000
• Family
  Ryzen Threadripper Ryzen Threadripper PRO
• Form Factor
  Desktops / Boxed Processor Desktops
• Generation
  3 3
• Segment
  Desktop / Server Desktop / Server
• Series
  Ryzen Threadripper 3000 Series Ryzen Threadripper PRO 3000 WX-Series

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

• Base Frequency
  2.9 GHz 4 GHz
• Core architecture
  normal normal
• CPU Cores
  64 12
• CPU Threads
  128 24
• Hyperthreading / SMT
  Yes Yes
• Max. Boost Clock
  4.3 GHz 4.3 GHz
• Overclocking
  Yes No
• Turbo Frequency (1 Core)
  4.3 GHz 4.3 GHz
• Turbo Frequency (64 Cores)
  3.2 GHz -
• Turbo Frequency (12 Cores)
  - 4.2 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.

• GPU name
  None None
• Graphics verification source
  https://www.amd.com/en/products/specifications/processors.html https://www.amd.com/en/products/specifications/processors.html

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

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

Types, channel quantity of RAM supported by AMD Ryzen Threadripper Pro 3945WX and AMD Ryzen Threadripper 3990X. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  Yes Yes
• Max. Memory
  2048 GB 2048 GB
• Memory channels
  4 8
• Memory type
  DDR4 DDR4
• PCIe
  PCIe 4.0 PCIe 4.0
• PCIe lanes
  72 72
• PCIe version
  4.0 4.0
• System Memory Specification
  - 3200

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen Threadripper 3990X and AMD Ryzen Threadripper Pro 3945WX 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
  280 W 280 W
• Maximum Operating Temperature
  95 °C 90 °C
• TDP (PL1, legacy label)
  280 W 280 W

Architecture, interfaces, additional instructions supported by AMD Ryzen Threadripper 3990X and AMD Ryzen Threadripper Pro 3945WX, virtual machine technologies and process technology.

• Architecture
  Castle Peak (Zen 2) Castle Peak (Zen 2)
• Codename
  Castle Peak Castle Peak
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L1-Cache
  4 MB 0.75 MB
• L2-Cache
  32 MB 6 MB
• L3-Cache
  256 MB 64 MB
• Manufacturer product ID (boxed)
  100-100000163WOF 100-100000168WOF
• Manufacturer product ID (tray)
  100-000000163 100-000000168
• Official source
  https://www.amd.com/en/products/specifications/processors.html https://www.amd.com/en/products/specifications/processors.html
• Operating systems
  Windows 11 - 64-Bit Edition / Windows 10 - 64-Bit Edition / RHEL x86 64-Bit Windows 10 - 64-Bit Edition / Windows 11 - 64-Bit Edition
• Release date
  2020-02-07 2020-07-14
• Socket
  sTRX4 WRX8 (sWRX8)
• Technology
  TSMC 7nm FinFET TSMC 7nm FinFET
• Thermal Solution (PIB)
  Cooler Not Included, Liquid Cooling Recommended -
• Verification scope
  Explicit manufacturer fields refreshed; other original historical fields retained, not all reverified. Partial composite conflicts are preserved. Explicit manufacturer fields refreshed; other original historical fields retained, not all reverified. Partial composite conflicts are preserved.
• Verified on
  2026-10-01 2026-10-01
• Virtualization
  AMD-V, SVM AMD-V, SVM