AMD Ryzen Threadripper Pro 3945WX vs AMD Ryzen Threadripper Pro 3955WX. Specifications, performance, tests

Comprehensive background on the processors being compared, detailing their series, generation, and targeted market segment.

• Segment
  Desktop / Server Desktop / Server
• Family
  AMD Ryzen AMD Ryzen
• Generation
  3 3
• CPU group
  AMD Ryzen Threadripper PRO 3000 AMD Ryzen Threadripper PRO 3000

Essential parameters including the number of cores, threads, base and turbo frequencies, and cache size. These metrics provide insight into the processor’s speed—higher values generally indicate better performance.

• Frequency
  4.00 GHz 3.90 GHz
• CPU Cores
  12 16
• Turbo (1 Core)
  4.30 GHz 4.30 GHz
• CPU Threads
  24 32
• Hyperthreading
  Yes Yes
• Overclocking
  Yes Yes
• Core architecture
  normal normal

The integrated graphics (iGPU) do not influence the CPU performance significantly; they serve as a substitute for a dedicated graphics card in the absence of one or are utilized in mobile devices.

• GPU name
  no iGPU no iGPU
• GPU (Turbo)
  No turbo No turbo

This section details the built-in codecs used for encoding and decoding media content, which significantly enhance processing speed and efficiency.

• 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

Overview of the types and quantities of RAM supported by AMD Ryzen Threadripper Pro 3955WX and AMD Ryzen Threadripper Pro 3945WX. The supported memory frequencies may vary depending on the motherboard configuration.

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

• AES-NI
  Yes Yes

Analyze the TDP (Thermal Design Power) requirements of AMD Ryzen Threadripper Pro 3945WX and AMD Ryzen Threadripper Pro 3955WX to make an informed decision on the appropriate cooling system. Remember that TDP refers to thermal watts, not electrical watts.

• TDP (PL1)
  280 W 280 W
• Tjunction max.
  95 °C 95 °C

Information on architecture, interfaces, and additional instructions supported by AMD Ryzen Threadripper Pro 3945WX and AMD Ryzen Threadripper Pro 3955WX, including virtual machine technologies and fabrication processes.

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• Virtualization
  AMD-V, SVM AMD-V, SVM
• ISA extensions
  SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L3-Cache
  64.00 MB 64.00 MB
• Architecture
  Castle Peak (Zen 2) Castle Peak (Zen 2)
• Technology
  7 nm 7 nm
• Socket
  WRX8 (sWRX8) WRX8 (sWRX8)
• Release date
  Q1/2021 Q1/2021