AMD Epyc 7642 vs AMD Epyc 7281

VS
AMD Epyc 7642
AMD Epyc 7642 Image
AMD Epyc 7281
AMD Epyc 7281 Image
AMD Epyc 7642
AMD Epyc 7281
Key Differences Key Differences AMD Epyc 7642 AMD Epyc 7281
Cores 48 16
CPU Threads 96 32
Base Clock Speed 2.3GHz 2.1GHz
Turbo Clock Speed 3.3GHz 2.7GHz
TDP (THERMAL DESIGN POINT) 225W 155W
Has integrated graphics No No
Performance per watt Not Known Not Known
Performance Performance AMD Epyc 7642 AMD Epyc 7281
CPU Speed & Cores 48 x 2.3GHz 16 x 2.1GHz
Number of CPU Threads 96 32
L2 Cache Size 24MB 8MB
L3 Cache Size 256MB 32MB
Turbo Boost Frequency 3.3GHz 2.7GHz
L1 Cache Size 3072KB 1536KB
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 7281
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 7281
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 14nm
TDP (Thermal Design Point) 225W 155W
PCI Express Version 4 3
Does it have Integrated Graphics No No
Supports Power Optimized L2 Cache No No
Memory Memory AMD Epyc 7642 AMD Epyc 7281
RAM Memory Speed 3200MHz 2400MHz
Max Memory Bandwidth 190.7GB/s 307GB/s
Max Memory Channels 8 8
Supported Memory Size 4000GB 2000GB
ECC (Error-Correcting Code) Memory Support Yes Yes
DDR Type Memory Version 4 Not Known
Benchmarks Benchmarks AMD Epyc 7642 AMD Epyc 7281
PassMark Score Not Known 12720
PassMark Score (Single Thread) Not Known 1429

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