AMD Ryzen 9 7945HX
AMD Epyc 7551
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AMD Ryzen 9 7945HX vs AMD Epyc 7551. Specifications, performance, tests

Overall score
star star star star star
Released
Q1/2023
AMD Ryzen 9 7945HX
AMD Ryzen 9 7945HX
Released
Q3/2017
Overall score
star star star star star
AMD Epyc 7551
AMD Epyc 7551

What's the best choice AMD Ryzen 9 7945HX or AMD Epyc 7551? Which processor is faster?

We have prepared a comparison to help you choose the best processor. Compare their specifications and benchmarks.

AMD Ryzen 9 7945HX has a maximum frequency of 2.50 GHz. 16 / 32 Cores. Power consumption of 55 W. Released in Q1/2023.

AMD Epyc 7551 has a maximum frequency of 2.00 GHz. 32 Cores. Power consumption of 180 W. Released in Q3/2017.

Differences

  • Place in the overall ranking

    (based on several benchmarks)

    65 left arrow score
  • Higher clock speed

    Around 20% better clock speed

    2.50 GHz left arrow 2.00 GHz
  • Higher turbo clock speed

    Around 44% better overclocked clock speed

    5.40 GHz left arrow 3.00 GHz
  • Performance per watt

    times less performance per watt

    55 W left arrow 180 W

Positions in all rankings

Common positions AMD Ryzen 9 7945HX CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    25 place
  • Cinebench R23 (Multi-Core)
    19 place
  • Cinebench R20 (Single-Core)
    30 place
  • Cinebench R20 (Multi-Core)
    15 place
  • Cinebench R15 (Single-Core)
    14 place
  • Cinebench R15 (Multi-Core)
    8 place
  • Geekbench 5, 64bit (Single-Core)
    20 place
  • Geekbench 5, 64bit (Multi-Core)
    51 place
  • iGPU - FP32 Performance (Single-precision GFLOPS)
    707 place
  • Blender 2.81 (bmw27)
    177 place
  • Estimated results for PassMark CPU Mark
    24 place
  • Geekbench 6 (Single-Core)
    20 place
  • Geekbench 6 (Multi-Core)
    26 place
AMD Epyc 7551 Reasons to consider
AMD Epyc 7551
Report a bug
  • Place in the overall ranking

    (based on several benchmarks)

    349 left arrow score
  • More number of cores

    About 2 times more cores

    32 left arrow 16

Positions in all rankings

Common positions AMD Epyc 7551 CPU in popular benchmarks, for comparison with other models.

  • Cinebench R15 (Single-Core)
    612 place
  • Cinebench R15 (Multi-Core)
    29 place
  • Monero Hashrate kH/s
    11 place
  • Geekbench 3, 64bit (Single-Core)
    313 place
  • Geekbench 3, 64bit (Multi-Core)
    18 place
  • Cinebench R11.5, 64bit (Single-Core)
    466 place
  • Cinebench R11.5, 64bit (Multi-Core)
    15 place
  • Estimated results for PassMark CPU Mark
    292 place

Specifications

Technical data
AMD Ryzen 9 7945HX AMD Ryzen 9 7945HX
AMD Epyc 7551 AMD Epyc 7551
CPU family and group

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

  • Family
    AMD Ryzen 9 left arrow AMD Epyc
  • CPU group
    AMD Ryzen 7045 left arrow AMD Epyc 7001
  • Segment
    Mobile left arrow Desktop / Server
  • Generation
    6 left arrow 1
  • Successor
    -- left arrow AMD Epyc 7552
CPU Technical specs

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.

  • Core architecture
    normal left arrow normal
  • Overclocking
    Yes left arrow No
  • Frequency
    2.50 GHz left arrow 2.00 GHz
IGPU

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 left arrow no iGPU
  • GPU frequency
    0.40 GHz left arrow
  • GPU (Turbo)
    2.20 GHz left arrow No turbo
  • Execution units
    2 left arrow
  • Shader
    128 left arrow
  • Max. GPU Memory
    8 GB left arrow --
  • Max. displays
    3 left arrow
  • Generation
    9 left arrow
  • Technology
    6 nm left arrow
  • Release date
    Q3/2022 left arrow
Hardware codec support

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

  • h265 / HEVC (8 bit)
    Decode / Encode left arrow No
  • h265 / HEVC (10 bit)
    Decode / Encode left arrow No
  • h264
    Decode / Encode left arrow No
  • VP8
    Decode / Encode left arrow No
  • VP9
    Decode / Encode left arrow No
  • AV1
    Decode left arrow No
  • AVC
    Decode / Encode left arrow No
  • VC-1
    Decode left arrow No
  • JPEG
    Decode / Encode left arrow No
Memory specs & PCI

Types, channel quantity of RAM supported by AMD Epyc 7551 and AMD Ryzen 9 7945HX. Depending on the motherboards, higher or lower memory frequencies may be supported.

  • Memory type
    DDR5-5200 left arrow DDR4-2666
  • Max. Memory
    128 GB left arrow
  • Memory channels
    2 (Dual Channel) left arrow 8
  • ECC
    Yes left arrow Yes
Thermal Management

Compare the TDP requirements of TDP AMD Ryzen 9 7945HX and AMD Epyc 7551 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

  • TDP up
    75 W left arrow --
  • Tjunction max.
    100 °C left arrow --
Technologies and extensions

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

  • Technology
    5 nm left arrow 14 nm
  • Socket
    FL1 left arrow SP3
  • L2-Cache
    16.00 MB left arrow --
  • L3-Cache
    64.00 MB left arrow 64.00 MB
  • Architecture
    Dragon Range (Zen 4) left arrow Naples (Zen)
  • Virtualization
    AMD-V, SVM left arrow AMD-V, SVM
  • Instruction set (ISA)
    x86-64 (64 bit) left arrow x86-64 (64 bit)
  • ISA extensions
    SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 left arrow SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
  • Release date
    Q1/2023 left arrow Q3/2017
  • Part Number
    100-000000870 left arrow --

Benchmarks

Performance tests CPUs

Based on the results of several benchmarks, you can more accurately estimate the difference in performance between AMD Ryzen 9 7945HX and AMD Epyc 7551.

Compare the synthetic test values and choose the best processor!

Estimated results for PassMark CPU Mark
PassMark is a test suite that performs complex mathematical calculations to determine CPU performance on file compression, encryption and physics-related tasks
58842
AMD Ryzen 9 7945HX
132
AMD Epyc 7551
Cinebench R15 (Single-Core)
The Cinebench R15 SC stresses the computing modules of a desktop or laptop computer to their limits and accurately determines the key performance parameters of the hardware
312
AMD Ryzen 9 7945HX
3838
AMD Epyc 7551
Cinebench R15 (Multi-Core)
The Cinebench R15 MC stresses the computing modules of a desktop or laptop computer to their limits and accurately determines the key performance parameters of the hardware
5597
AMD Ryzen 9 7945HX
18439
AMD Epyc 7551

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