AMD Epyc 7643
AMD Epyc 7663
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AMD Epyc 7643 vs AMD Epyc 7663. Specifications, performance, tests

Overall score
star star star star star
Released
Q1/2021
AMD Epyc 7643
AMD Epyc 7643
Released
Q1/2021
Overall score
star star star star star
AMD Epyc 7663
AMD Epyc 7663

What's the best choice AMD Epyc 7643 or AMD Epyc 7663? Which processor is faster?

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

AMD Epyc 7643 has a maximum frequency of 2.30 GHz. 48 Cores. Power consumption of 280 W. Released in Q1/2021.

AMD Epyc 7663 has a maximum frequency of 2.00 GHz. 56 Cores. Power consumption of 240 W. Released in Q1/2021.

Differences

AMD Epyc 7643 Reasons to consider
AMD Epyc 7643
Report a bug
  • Higher clock speed

    Around 13% better clock speed

    2.30 GHz left arrow 2.00 GHz
  • Higher turbo clock speed

    Around 3% better overclocked clock speed

    3.60 GHz left arrow 3.50 GHz

Positions in all rankings

Common positions AMD Epyc 7643 CPU in popular benchmarks, for comparison with other models.

  • Geekbench 5, 64bit (Single-Core)
    299 place
  • Estimated results for PassMark CPU Mark
    6 place
AMD Epyc 7663 Reasons to consider
AMD Epyc 7663
Report a bug
  • Place in the overall ranking

    (based on several benchmarks)

    1071 left arrow score
  • More number of cores

    About 1.17 times more cores

    56 left arrow 48
  • Performance per watt

    About 0.86 times less performance per watt

    240 W left arrow 280 W

Positions in all rankings

Common positions AMD Epyc 7663 CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    183 place
  • Geekbench 5, 64bit (Single-Core)
    311 place
  • Estimated results for PassMark CPU Mark
    1306 place

Specifications

Technical data
AMD Epyc 7643 AMD Epyc 7643
AMD Epyc 7663 AMD Epyc 7663
CPU family and group

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

  • Segment
    Desktop / Server left arrow Desktop / Server
  • Family
    AMD Epyc left arrow AMD Epyc
  • Generation
    3 left arrow 3
  • CPU group
    AMD Epyc 7003 left arrow AMD Epyc 7003
  • Predecessor
    AMD Epyc 7642 left arrow --
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.

  • Frequency
    2.30 GHz left arrow 2.00 GHz
  • CPU Cores
    48 left arrow 56
  • Turbo (1 Core)
    3.60 GHz left arrow 3.50 GHz
  • CPU Threads
    96 left arrow 112
  • Hyperthreading
    Yes left arrow Yes
  • Overclocking
    No left arrow No
  • Core architecture
    normal left arrow normal
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
    no iGPU left arrow no iGPU
  • GPU (Turbo)
    No turbo left arrow No turbo
Hardware codec support

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

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

Types, channel quantity of RAM supported by AMD Epyc 7663 and AMD Epyc 7643. Depending on the motherboards, higher or lower memory frequencies may be supported.

  • Memory type
    DDR4-3200 left arrow DDR4-3200
  • ECC
    Yes left arrow Yes
  • Memory channels
    8 left arrow 8
  • PCIe version
    4.0 left arrow 4.0
  • PCIe lanes
    128 left arrow 128
Encryption
  • AES-NI
    Yes left arrow Yes
Thermal Management

Compare the TDP requirements of TDP AMD Epyc 7643 and AMD Epyc 7663 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

  • TDP (PL1)
    280 W left arrow 240 W
  • TDP down
    -- left arrow 225 W
Technologies and extensions

Architecture, interfaces, additional instructions supported by AMD Epyc 7643 and AMD Epyc 7643, virtual machine technologies and process technology.

  • Instruction set (ISA)
    x86-64 (64 bit) left arrow x86-64 (64 bit)
  • Virtualization
    AMD-V, SVM left arrow AMD-V, SVM
  • ISA extensions
    SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 left arrow SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
  • L3-Cache
    256.00 MB left arrow 256.00 MB
  • Architecture
    Milan (Zen 3) left arrow Milan (Zen 3)
  • Technology
    7 nm left arrow 7 nm
  • Socket
    SP3 left arrow SP3
  • Release date
    Q1/2021 left arrow Q1/2021

Benchmarks

Performance tests CPUs

Based on the results of several benchmarks, you can more accurately estimate the difference in performance between AMD Epyc 7643 and AMD Epyc 7663.

Compare the synthetic test values and choose the best processor!

Latest comparisons