AMD Ryzen 7 PRO 4750U vs AMD Ryzen 9 3900. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 4000U AMD Ryzen 3000
• Family
  AMD Ryzen AMD Ryzen
• Generation
  3 3
• Segment
  Mobile Desktop / Server
• Successor
  - AMD Ryzen 9 5900

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

• Base Frequency
  1.7 GHz 3.1 GHz
• Core architecture
  normal normal
• CPU Cores
  8 12
• CPU Threads
  16 24
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  No Yes
• Turbo Frequency (1 Core)
  4.1 GHz 4.3 GHz
• Turbo Frequency (8 Cores)
  3.1 GHz -
• Turbo Frequency (12 Cores)
  - No turbo

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
  7 -
• Generation
  9 -
• GPU Frequency
  1600 MHz -
• GPU name
  AMD Radeon 7 Graphics (Renoir) no iGPU
• GPU Turbo
  No turbo No turbo
• Max. displays
  3 -
• Max. GPU Memory
  2 GB -
• Release date
  Q1/2020 -
• Shader
  448 -
• Technology
  7 nm -

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

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

Types, channel quantity of RAM supported by AMD Ryzen 9 3900 and AMD Ryzen 7 PRO 4750U. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  Yes No
• Max. Memory
  64 GB 128 GB
• Memory channels
  2 2
• Memory type
  DDR4-3200 DDR4-3200
• PCIe lanes
  12 20
• PCIe version
  3.0 4.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 7 PRO 4750U and AMD Ryzen 9 3900 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
  105 °C 95 °C
• TDP (PL1, legacy label)
  15 W 65 W
• TDP down
  10 W -
• TDP up
  25 W -

Architecture, interfaces, additional instructions supported by AMD Ryzen 7 PRO 4750U and AMD Ryzen 9 3900, virtual machine technologies and process technology.

• Architecture
  Renoir (Zen 2) Matisse (Zen 2)
• 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
• L3-Cache
  8.00 MB 64.00 MB
• Release date
  Q2/2020 Q3/2019
• Socket
  FP6 AM4
• Technology
  7 nm 7 nm
• Virtualization
  AMD-V, SVM AMD-V, SVM