AMD Ryzen 9 3900XT vs AMD Ryzen 9 3950X. Specifications, performance, tests

Background information about the processors being compared, series, generation and 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

Basic parameters such as number of cores, number of threads, base and turbo frequency, and cache size. These parameters indirectly tell about the speed of the processor, the higher they are the better.

• 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

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

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

• 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

Types, channel quantity of RAM supported by AMD Ryzen 9 3950X and AMD Ryzen 9 3900XT. Depending on the motherboards, higher or lower memory frequencies may be supported.

• 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

Compare the TDP requirements of TDP AMD Ryzen 9 3900XT and AMD Ryzen 9 3950X to select a cooling system. Note, the TDP value 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

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 3900XT and AMD Ryzen 9 3900XT, virtual machine technologies and process technology.

• 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