AMD Ryzen 9 7940HS vs AMD Ryzen 9 5900HX. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 7040 AMD Ryzen 5000H
• Family
  Ryzen Ryzen
• Form Factor
  Laptops / Desktops Laptops / Desktops
• Generation
  6 4
• Segment
  Mobile Mobile
• Series
  Ryzen 7000 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
  4 GHz 3.3 GHz
• Core architecture
  normal normal
• Core Configuration
  8x Zen 4 -
• CPU Cores
  8 8
• CPU Threads
  16 16
• Hyperthreading / SMT
  Yes Yes
• Max. Boost Clock
  5.2 GHz 4.6 GHz
• Overclocking
  No No
• Turbo Frequency (1 Core)
  5.2 GHz 4.6 GHz
• Turbo Frequency (8 Cores)
  - 4.2 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 12
• Execution units
  12 8
• Generation
  10 9
• GPU Frequency
  2800 MHz 2100 MHz
• GPU name
  AMD Radeon 780M AMD Radeon Graphics
• GPU Turbo
  2700 MHz No turbo
• Graphics Cores
  12 8
• Max. displays
  4 3
• Max. GPU Memory
  32 GB 2 GB
• Release date
  Q1/2023 Q1/2020
• Shader
  768 512
• Technology
  4 nm 7 nm

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

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

Types, channel quantity of RAM supported by AMD Ryzen 9 5900HX and AMD Ryzen 9 7940HS. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  Yes No
• Max. Memory
  256 GB 64 GB
• Memory Bandwidth
  89.6 GB/s -
• Memory channels
  2 2
• Memory type
  DDR5 (FP7r2) / LPDDR5X (FP7-FP8) DDR4 - Up to 3200 / LPDDR4 - Up to 4266
• PCIe
  PCIe 4.0 PCIe 3.0
• PCIe lanes
  - 12
• PCIe version
  - 3.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 7940HS and AMD Ryzen 9 5900HX Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Configurable TDP
  35-54 W 35-54 W
• Default TDP
  35-54 W 45+ W
• Maximum Operating Temperature
  100 °C 105 °C
• TDP (PL1 / PBP, legacy combined label)
  54 W -
• TDP down
  35 W 35 W
• TDP up
  - 54 W
• TDP (PL1, legacy label)
  - 45 W

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 7940HS and AMD Ryzen 9 5900HX, virtual machine technologies and process technology.

• Architecture
  Phoenix (Zen 4) Cezanne (Zen 3)
• Chip design
  Monolithic -
• Codename
  Phoenix Cezanne
• Documents
  Technical data sheet -
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L2-Cache
  8 MB 4 MB
• L3-Cache
  16 MB 16 MB
• Operating systems
  Windows 10, Windows 11, Linux Windows 10 - 64-Bit Edition / RHEL x86 64-Bit / Ubuntu x86 64-Bit
• Part Number
  100-000001128 -
• Release date
  2023-04-30 2021-01-12
• Socket
  FP7 / FP7r2 / FP8 FP6
• Technology
  TSMC 4nm FinFET TSMC 7nm FinFET
• Virtualization
  AMD-V, SVM AMD-V, SVM
• Manufacturer product ID (tray)
  - 100-000000300