AMD Ryzen 9 7940HS vs AMD Ryzen 7 7840HS. Specifications, performance, tests

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

• Family
  AMD Ryzen 9 AMD Ryzen 7
• CPU group
  AMD Ryzen 7040 AMD Ryzen 7040
• Segment
  Mobile Mobile
• Generation
  6 6

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.

• CPU Cores / Threads
  8 / 16 8 / 16
• Core architecture
  normal normal
• Cores
  8x Zen 4 8x Zen 4
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  No No
• Frequency
  4.00 GHz 3.80 GHz
• Turbo Frequency (1 Core)
  5.20 GHz 5.10 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
  AMD Radeon 780M Graphics AMD Radeon 780M Graphics
• GPU frequency
  1.20 GHz 1.20 GHz
• GPU (Turbo)
  2.70 GHz 2.70 GHz
• Execution units
  12 12
• Shader
  768 768
• Max. GPU Memory
  32 GB 32 GB
• Max. displays
  4 4
• Generation
  10 10
• Direct X
  12 12
• Technology
  4 nm 4 nm
• Release date
  Q1/2023 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
• VP8
  Decode Decode
• VP9
  Decode Decode
• AV1
  Decode / Encode Decode / Encode
• AVC
  Decode Decode
• VC-1
  Decode Decode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by AMD Ryzen 7 7840HS and AMD Ryzen 9 7940HS. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR5-5600LPDDR5X-7500 DDR5-5600LPDDR5X-7500
• Max. Memory
  256 GB 256 GB
• Memory channels
  2 (Dual Channel) 2 (Dual Channel)
• Bandwidth
  89.6 GB/s 89.6 GB/s
• ECC
  Yes Yes
• PCIe
  4.0 x 20 4.0 x 20
• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 7940HS and AMD Ryzen 7 7840HS to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1 / PBP)
  54 W 54 W
• TDP down
  35 W 35 W
• Tjunction max.
  100 °C 100 °C

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

• Technology
  4 nm 4 nm
• Chip design
  Monolithic Monolithic
• Socket
  FP8 FP8
• L2-Cache
  8.00 MB 8.00 MB
• L3-Cache
  16.00 MB 16.00 MB
• Architecture
  Phoenix (Zen 4) Phoenix (Zen 4)
• Operating systems
  Windows 10, Windows 11, Linux Windows 10, Windows 11, Linux
• Virtualization
  AMD-V, SVM AMD-V, SVM
• 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,FMA3, AVX2, AVX512
• Release date
  Q1/2023 Q1/2023
• Part Number
  100-000001128 100-000001129
• Documents
  Technical data sheet Technical data sheet