AMD Ryzen 9 7945HX vs AMD Ryzen 7 3800X. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 7045 AMD Ryzen 3000
• Family
  Ryzen Ryzen
• Form Factor
  Laptops / Desktops Desktops / Boxed Processor
• Generation
  6 3
• Segment
  Mobile Desktop / Server
• Series
  Ryzen 7000 Series Ryzen 3000 Series
• Successor
  - AMD Ryzen 7 5800X

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

• Base Frequency
  2.5 GHz 3.9 GHz
• Core architecture
  normal normal
• Core Configuration
  16x Zen 4 -
• CPU Cores
  16 8
• CPU Threads
  32 16
• Hyperthreading / SMT
  Yes Yes
• Max. Boost Clock
  5.4 GHz 4.5 GHz
• Overclocking
  Yes Yes
• Turbo Frequency (1 Core)
  5.4 GHz 4.5 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 -
• Execution units
  2 -
• Generation
  9 -
• GPU Frequency
  2200 MHz -
• GPU name
  AMD Radeon 610M None
• GPU Turbo
  2200 MHz -
• Graphics Cores
  2 -
• Max. displays
  3 -
• Max. GPU Memory
  8 GB -
• Release date
  Q3/2022 -
• Shader
  128 -
• Technology
  6 nm -

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

• AV1
  Decode 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 7 3800X and AMD Ryzen 9 7945HX. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  Yes Yes
• Max. Memory
  128 GB 128 GB
• Memory Bandwidth
  83.2 GB/s -
• Memory channels
  2 2
• Memory type
  DDR5 DDR4
• PCIe
  PCIe 5.0 PCIe 4.0 x16
• PCIe lanes
  - 20
• PCIe version
  - 4.0
• System Memory Specification
  - 3200

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 7945HX and AMD Ryzen 7 3800X 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
  55-75 W -
• Default TDP
  55 W 105 W
• Maximum Operating Temperature
  100 °C 95 °C
• TDP (PL1 / PBP, legacy combined label)
  55 W -
• TDP up
  75 W -
• TDP (PL1, legacy label)
  - 105 W

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 7945HX and AMD Ryzen 7 3800X, virtual machine technologies and process technology.

• Architecture
  Dragon Range (Zen 4) Matisse (Zen 2)
• Chip design
  Chiplet -
• Codename
  Dragon Range Matisse
• 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
  16 MB 4 MB
• L3-Cache
  64 MB 32 MB
• Operating systems
  Windows 10, Windows 11, Linux Windows 11 - 64-Bit Edition / Windows 10 - 64-Bit Edition / RHEL x86 64-Bit / Ubuntu x86 64-Bit
• Part Number
  100-000000870 -
• Release date
  2023-02-28 2019-07-07
• Socket
  FL1 AM4
• Technology
  TSMC 5nm FinFET TSMC 7nm FinFET
• Virtualization
  AMD-V, SVM AMD-V, SVM
• L1-Cache
  - 0.5 MB
• Manufacturer product ID (boxed)
  - 100-100000025BOX
• Manufacturer product ID (MPK)
  - 100-100000025MPK
• Manufacturer product ID (tray)
  - 100-000000025