AMD Epyc 7642 vs AMD Epyc 7551

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AMD Epyc 7642
AMD Epyc 7642 Image
AMD Epyc 7551
AMD Epyc 7551 Image
AMD Epyc 7642
AMD Epyc 7551
Key Differences Key Differences AMD Epyc 7642 AMD Epyc 7551
Cores 48 32
CPU Threads 96 64
Base Clock Speed 2.3GHz 2GHz
Turbo Clock Speed 3.3GHz 3GHz
TDP (THERMAL DESIGN POINT) 225W 180W
Has integrated graphics No No
Performance per watt Not Known Not Known
Performance Performance AMD Epyc 7642 AMD Epyc 7551
CPU Speed & Cores 48 x 2.3GHz 32 x 2GHz
Number of CPU Threads 96 64
L2 Cache Size 24MB 16MB
L3 Cache Size 256MB 64MB
Turbo Boost Frequency 3.3GHz 3GHz
L1 Cache Size 3072KB 3072KB
L2 Core 0.5MB/core 0.5MB/core
L3 Core 5.33MB/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 7642 AMD Epyc 7551
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 7642 AMD Epyc 7551
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
Transistor Count Not Known 19200 million
Supports Power Optimized L2 Cache No No
Memory Memory AMD Epyc 7642 AMD Epyc 7551
RAM Memory Speed 3200MHz 2666MHz
Max Memory Bandwidth 190.7GB/s 341GB/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 7642 AMD Epyc 7551
PassMark Score Not Known 19606
PassMark Score (Single Thread) Not Known 1660

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