AMD Ryzen 7 5800U vs AMD Ryzen 9 7940HS. Specifications, performance, tests

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

• Segment
  Mobile Mobile
• Family
  AMD Ryzen AMD Ryzen 9
• Generation
  4 6
• CPU group
  AMD Ryzen 5000U AMD Ryzen 7040

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
  1.90 GHz 4.00 GHz
• Overclocking
  No No
• 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
  AMD Radeon 8 Graphics (Renoir) AMD Radeon 780M Graphics
• GPU frequency
  2.00 GHz 1.20 GHz
• GPU (Turbo)
  No turbo 2.70 GHz
• Execution units
  8 12
• Shader
  512 768
• Max. GPU Memory
  2 GB 32 GB
• Max. displays
  3 4
• Generation
  9 10
• Technology
  7 nm 4 nm
• Release date
  Q1/2020 Q1/2023

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

• h265 / HEVC (8 bit)
  Decode / Encode Decode / Encode
• h265 / HEVC (10 bit)
  Decode / Encode Decode / Encode
• h264
  Decode / Encode Decode / Encode
• VP9
  Decode / Encode Decode
• VP8
  Decode / Encode Decode
• AV1
  No Decode / Encode
• AVC
  Decode / Encode Decode
• VC-1
  Decode Decode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by AMD Ryzen 9 7940HS and AMD Ryzen 7 5800U. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-3200 DDR5-5600LPDDR5X-7500
• Max. Memory
  32 GB 256 GB
• ECC
  Yes Yes
• Memory channels
  2 2 (Dual Channel)

Compare the TDP requirements of TDP AMD Ryzen 7 5800U and AMD Ryzen 9 7940HS to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP up
  25 W --
• TDP down
  10 W 35 W
• Tjunction max.
  105 °C 100 °C

Architecture, interfaces, additional instructions supported by AMD Ryzen 7 5800U and AMD Ryzen 7 5800U, 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,FMA3, AVX2, AVX512
• L2-Cache
  -- 8.00 MB
• L3-Cache
  16.00 MB 16.00 MB
• Architecture
  Cezanne (Zen 3) Phoenix (Zen 4)
• Technology
  7 nm 4 nm
• Socket
  FP6 FP8
• Release date
  Q1/2021 Q1/2023
• Part Number
  -- 100-000001128