AMD Ryzen 9 3900XT vs AMD Ryzen 9 3950X. 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 3000 AMD Ryzen 3000
• Successor
  -- AMD Ryzen 9 5950X

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
  4.10 GHz 3.50 GHz
• CPU Cores
  12 16
• Turbo (1 Core)
  4.70 GHz 4.70 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 9 3950X and AMD Ryzen 9 3900XT. The supported memory frequencies may vary depending on the motherboard configuration.

• Memory type
  DDR4-3200 DDR4-3200
• Max. Memory
  128 GB 128 GB
• ECC
  Yes Yes
• Memory channels
  2 2
• PCIe version
  4.0 4.0
• PCIe lanes
  20 20

• AES-NI
  Yes Yes

Analyze the TDP (Thermal Design Power) requirements of AMD Ryzen 9 3900XT and AMD Ryzen 9 3950X to make an informed decision on the appropriate cooling system. Remember that TDP refers to thermal watts, not electrical watts.

• TDP (PL1)
  105 W 105 W
• TDP (PL2)
  142 W 142 W
• Tjunction max.
  95 °C 95 °C

Information on architecture, interfaces, and additional instructions supported by AMD Ryzen 9 3900XT and AMD Ryzen 9 3950X, 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
  Matisse (Zen 2) Matisse (Zen 2)
• Technology
  7 nm 7 nm
• Socket
  AM4 AM4
• Release date
  Q2/2020 Q3/2019