AMD Epyc 7742 vs AMD Epyc 7551P

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AMD Epyc 7742
AMD Epyc 7742 Image
AMD Epyc 7551P
AMD Epyc 7551P Image
AMD Epyc 7742
AMD Epyc 7551P
Key Differences Key Differences AMD Epyc 7742 AMD Epyc 7551P
Cores 64 32
CPU Threads 128 64
Base Clock Speed 2.25GHz 2GHz
Turbo Clock Speed 3.4GHz 3GHz
TDP (THERMAL DESIGN POINT) 225W 180W
Has integrated graphics No No
Performance per watt 66.7 36.9
Performance Performance AMD Epyc 7742 AMD Epyc 7551P
CPU Speed & Cores 64 x 2.25GHz 32 x 2GHz
Number of CPU Threads 128 64
L2 Cache Size 32MB 16MB
L3 Cache Size 256MB 64MB
Turbo Boost Frequency 3.4GHz 3GHz
L1 Cache Size 4096KB 3072KB
L2 Core 0.5MB/core 0.5MB/core
L3 Core 4MB/core 2MB/core
Does it have an unlocked multiplier No No
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
Features Features AMD Epyc 7742 AMD Epyc 7551P
Has AES Support Yes Yes
Supported SSE Version 4.2 4.2
Has AVX Support Yes Yes
Has MMX Tech Support Yes Yes
Has F16C Support Yes Yes
Has FMA4 Instructions Support No No
Has Multithreading Tech Support Yes No
Has NX Processor Bit Support Yes Yes
Has FMA3 Instructions Support Yes Yes
Supports CPU Throttling No No
Supports ARM TrustZone Tech No No
General info General info AMD Epyc 7742 AMD Epyc 7551P
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 14nm
TDP (Thermal Design Point) 225W 180W
PCI Express Version 4 3
Does it have Integrated Graphics No No
Supports Power Optimized L2 Cache No No
Memory Memory AMD Epyc 7742 AMD Epyc 7551P
RAM Memory Speed 3200MHz 2666MHz
Max Memory Bandwidth 190.7GB/s 158.95GB/s
Max Memory Channels 8 8
Supported Memory Size 4000GB 2000GB
ECC (Error-Correcting Code) Memory Support Yes Yes
DDR Type Memory Version 4 4
Benchmarks Benchmarks AMD Epyc 7742 AMD Epyc 7551P
PassMark Score 67185 23581
PassMark Score (Single Thread) 2376 1533
Geekbench 5 Score (Multi-Thread) 15005 6648
Cinebench R20 Score (Multi-Thread) 20644 Not Known
Cinebench R20 Score (Single Thread) 398 Not Known
Geekbench 5 Score (Single Thread) 725 609
Blender Score (bmw27) 33.9seconds Not Known
Blender Score (Classroom) 95.8seconds Not Known
CPU Performance (Per Watt) 66.7 36.9

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