AMD Epyc 7742 vs AMD Epyc 7451

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AMD Epyc 7742
AMD Epyc 7742 Image
AMD Epyc 7451
AMD Epyc 7451 Image
AMD Epyc 7742
AMD Epyc 7451
Key Differences Key Differences AMD Epyc 7742 AMD Epyc 7451
Cores 64 24
CPU Threads 128 48
Base Clock Speed 2.25GHz 2.3GHz
Turbo Clock Speed 3.4GHz 3.2GHz
TDP (THERMAL DESIGN POINT) 225W 180W
Has integrated graphics No No
Performance per watt 66.7 Not Known
Performance Performance AMD Epyc 7742 AMD Epyc 7451
CPU Speed & Cores 64 x 2.25GHz 24 x 2.3GHz
Number of CPU Threads 128 48
L2 Cache Size 32MB 12MB
L3 Cache Size 256MB 64MB
Turbo Boost Frequency 3.4GHz 3.2GHz
L1 Cache Size 4096KB 2304KB
L2 Core 0.5MB/core 0.5MB/core
L3 Core 4MB/core 2.67MB/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 7451
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 7451
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 7742 AMD Epyc 7451
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 Not Known
Benchmarks Benchmarks AMD Epyc 7742 AMD Epyc 7451
PassMark Score 67185 28957
PassMark Score (Single Thread) 2376 1601
Geekbench 5 Score (Multi-Thread) 15005 Not Known
Cinebench R20 Score (Multi-Thread) 20644 Not Known
Cinebench R20 Score (Single Thread) 398 Not Known
Geekbench 5 Score (Single Thread) 725 Not Known
Blender Score (bmw27) 33.9seconds Not Known
Blender Score (Classroom) 95.8seconds Not Known
CPU Performance (Per Watt) 66.7 Not Known

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