AMD Ryzen 5 8640U vs AMD Ryzen 9 7940HS. Specifications, performance, tests

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

• Family
  Ryzen Ryzen
• Form Factor
  Laptops / Desktops Laptops / Desktops
• Segment
  Mobile Mobile
• Series
  Ryzen 8000 Series Ryzen 7000 Series
• CPU group
  - AMD Ryzen 7040
• Generation
  - 6

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

• Base Frequency
  3.5 GHz 4 GHz
• CPU Cores
  6 8
• CPU Threads
  12 16
• Max. Boost Clock
  4.9 GHz 5.2 GHz
• Overclocking
  No No
• Core architecture
  - normal
• Core Configuration
  - 8x Zen 4
• Hyperthreading / SMT
  - Yes
• Turbo Frequency (1 Core)
  - 5.2 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.

• GPU Frequency
  2600 MHz 2800 MHz
• GPU name
  AMD Radeon 760M AMD Radeon 780M
• Graphics Cores
  8 12
• DirectX Version
  - 12
• Execution units
  - 12
• Generation
  - 10
• GPU Turbo
  - 2700 MHz
• Max. displays
  - 4
• Max. GPU Memory
  - 32 GB
• Release date
  - Q1/2023
• Shader
  - 768
• Technology
  - 4 nm

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

• AV1
  - Decode / Encode
• H.264 / AVC
  - Conflicting source values: Decode | Decode / Encode
• h265 / HEVC (8 bit)
  - Decode / Encode
• h265 / HEVC (10 bit)
  - Decode / Encode
• JPEG
  - Decode / Encode
• VC-1
  - Decode
• VP8
  - Decode
• VP9
  - Decode

Types, channel quantity of RAM supported by AMD Ryzen 9 7940HS and AMD Ryzen 5 8640U. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory channels
  2 2
• Memory type
  DDR5 (FP7r2) / LPDDR5X (FP7-FP8) DDR5 (FP7r2) / LPDDR5X (FP7-FP8)
• PCIe
  PCIe 4.0 PCIe 4.0
• ECC
  - Yes
• Max. Memory
  - 256 GB
• Memory Bandwidth
  - 89.6 GB/s

• AES-NI
  - Yes

Compare the TDP requirements of TDP AMD Ryzen 5 8640U and AMD Ryzen 9 7940HS 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
  15-30 W 35-54 W
• Default TDP
  28 W 35-54 W
• Maximum Operating Temperature
  100 °C 100 °C
• TDP (PL1 / PBP, legacy combined label)
  - 54 W
• TDP down
  - 35 W

Architecture, interfaces, additional instructions supported by AMD Ryzen 5 8640U and AMD Ryzen 9 7940HS, virtual machine technologies and process technology.

• Availability window (manufacturer)
  Q1 2024 -
• Codename
  Hawk Point Phoenix
• Date evidence scope
  Manufacturer-announced OEM/board availability window; exact first shipment is not established by this source. -
• L2-Cache
  6 MB 8 MB
• L3-Cache
  16 MB 16 MB
• Release date
  Q1/2024 2023-04-30
• Socket
  FP7 / FP7r2 / FP8 FP7 / FP7r2 / FP8
• Technology
  TSMC 4nm FinFET TSMC 4nm FinFET
• Architecture
  - Phoenix (Zen 4)
• Chip design
  - Monolithic
• Documents
  - Technical data sheet
• Instruction set (ISA)
  - x86-64 (64 bit)
• ISA extensions
  - SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
• Operating systems
  - Windows 10, Windows 11, Linux
• Part Number
  - 100-000001128
• Virtualization
  - AMD-V, SVM