AMD Ryzen 9 5950X vs AMD Ryzen 9 3900XT. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 5000 AMD Ryzen 3000
• Family
  Ryzen AMD Ryzen
• Form Factor
  Desktops / Boxed Processor -
• Generation
  4 3
• Predecessor
  AMD Ryzen 9 3950X -
• Segment
  Desktop Desktop / Server
• Series
  Ryzen 5000 Series -

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

• Base Frequency
  3.4 GHz 4.1 GHz
• Core architecture
  normal normal
• CPU Cores
  16 12
• CPU Threads
  32 24
• Hyperthreading / SMT
  Yes Yes
• Max. Boost Clock
  4.9 GHz -
• Overclocking
  Yes Yes
• Turbo Frequency (1 Core)
  4.9 GHz 4.7 GHz
• Turbo Frequency (16 Cores)
  4.2 GHz -
• Turbo Frequency (12 Cores)
  - 4.6 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 9 3900XT and AMD Ryzen 9 5950X. Depending on the motherboards, higher or lower memory frequencies may be supported.

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

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 5950X and AMD Ryzen 9 3900XT 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
  105 W -
• Maximum Operating Temperature
  90 °C 95 °C
• TDP (PL1, legacy label)
  105 W 105 W
• TDP (PL2)
  142 W 142 W

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 5950X and AMD Ryzen 9 3900XT, virtual machine technologies and process technology.

• Architecture
  Vermeer (Zen 3) Matisse (Zen 2)
• Codename
  Vermeer -
• 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
• L2-Cache
  8 MB -
• L3-Cache
  64 MB 64.00 MB
• Official source
  https://www.amd.com/en/products/processors/desktops/ryzen/5000-series/amd-ryzen-9-5950x.html -
• Release date
  2020-11-05 Q2/2020
• Socket
  AM4 AM4
• Technology
  TSMC 7nm FinFET 7 nm
• Verification scope
  Explicit manufacturer fields refreshed; other original historical fields retained, not all reverified. Partial composite conflicts are preserved. -
• Verified on
  2026-09-30 -
• Virtualization
  AMD-V, SVM AMD-V, SVM