AMD Ryzen 9 3900 vs AMD Ryzen 9 7900X. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 3000 AMD Ryzen 7000
• Family
  AMD Ryzen Ryzen
• Generation
  3 6
• Predecessor
  - AMD Ryzen 9 5900X
• Segment
  Desktop / Server Desktop
• Successor
  AMD Ryzen 9 5900 -
• Form Factor
  - Desktops / Boxed Processor
• Series
  - Ryzen 7000 Series

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

• Base Frequency
  3.1 GHz 4.7 GHz
• Core architecture
  normal normal
• CPU Cores
  12 12
• CPU Threads
  24 24
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  Yes Yes
• Turbo Frequency (1 Core)
  4.3 GHz 5.6 GHz
• Turbo Frequency (12 Cores)
  No turbo 5.4 GHz
• Core Configuration
  - 12x
• Max. Boost Clock
  - 5.6 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.

• DirectX Version
  - 12
• Execution units
  - 2
• Generation
  - 9
• GPU Frequency
  - 2200 MHz
• GPU name
  no iGPU AMD Radeon Graphics
• GPU Turbo
  No turbo 2200 MHz
• Max. displays
  - 3
• Max. GPU Memory
  - 8 GB
• Release date
  - Q3/2022
• Shader
  - 128
• Technology
  - 5 nm
• Graphics Cores
  - 2

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

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

Types, channel quantity of RAM supported by AMD Ryzen 9 7900X and AMD Ryzen 9 3900. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No Yes
• Max. Memory
  128 GB 128 GB
• Memory channels
  2 2
• Memory type
  DDR4-3200 DDR5
• PCIe lanes
  20 -
• PCIe version
  4.0 -
• Memory Bandwidth
  - 83.2 GB/s
• PCIe
  - 5.0 x 24

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 3900 and AMD Ryzen 9 7900X Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Maximum Operating Temperature
  95 °C 95 °C
• TDP (PL1, legacy label)
  65 W 170 W
• TDP (PL2)
  - 230 W
• Default TDP
  - 170 W

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 3900 and AMD Ryzen 9 7900X, virtual machine technologies and process technology.

• Architecture
  Matisse (Zen 2) Raphael (Zen 4)
• 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,FMA3, AVX2, AVX512
• L2-Cache
  - 12 MB
• L3-Cache
  64 MB 64 MB
• Part Number
  - 100-100000589WOF
• Release date
  Q3/2019 2022-09-27
• Socket
  AM4 AM5
• Technology
  7 nm TSMC 5nm FinFET
• Virtualization
  AMD-V, SVM AMD-V, SVM
• Chip design
  - Chiplet
• Codename
  - Raphael AM5
• Documents
  - Technical data sheet
• Operating systems
  - Windows 10, Windows 11, Linux
• Release price
  - 549 $