AMD Ryzen 9 7945HX vs AMD Ryzen 9 7900X. Specifications, performance, tests

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

• Family
  AMD Ryzen 9 AMD Ryzen 9
• CPU group
  AMD Ryzen 7045 AMD Ryzen 7000
• Segment
  Mobile Desktop / Server
• Generation
  6 6
• Predecessor
  -- AMD Ryzen 9 5900X

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
  16 / 32 12 / 24
• Core architecture
  normal normal
• Cores
  16x Zen 4 12x
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  Yes Yes
• Frequency
  2.50 GHz 4.70 GHz
• Turbo Frequency (1 Core)
  5.40 GHz 5.60 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 610M Graphics AMD Radeon Graphics (Raphael)
• GPU frequency
  0.40 GHz 0.40 GHz
• GPU (Turbo)
  2.20 GHz 2.20 GHz
• Execution units
  2 2
• Shader
  128 128
• Max. GPU Memory
  8 GB 8 GB
• Max. displays
  3 3
• Generation
  9 9
• Direct X
  12 12
• Technology
  6 nm 5 nm
• Release date
  Q3/2022 Q3/2022

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 / Encode Decode / Encode
• VP9
  Decode / Encode Decode / Encode
• AV1
  Decode No
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by AMD Ryzen 9 7900X and AMD Ryzen 9 7945HX. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR5-5200 DDR5-5200
• Max. Memory
  128 GB 128 GB
• Memory channels
  2 (Dual Channel) 2 (Dual Channel)
• Bandwidth
  83.2 GB/s 83.2 GB/s
• ECC
  Yes Yes
• PCIe
  5.0 x 28 5.0 x 24
• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 7945HX and AMD Ryzen 9 7900X to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL2)
  -- 230 W
• TDP up
  75 W --
• Tjunction max.
  100 °C 95 °C

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

• Technology
  5 nm 5 nm
• Chip design
  Chiplet Chiplet
• Socket
  FL1 AM5 (LGA 1718)
• L2-Cache
  16.00 MB 12.00 MB
• L3-Cache
  64.00 MB 64.00 MB
• Architecture
  Dragon Range (Zen 4) Raphael (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 Q4/2022
• Release price
  -- 549 $
• Part Number
  100-000000870 100-100000589WOF
• Documents
  Technical data sheet Technical data sheet