AMD Ryzen 9 3900 vs AMD Epyc 7251

VS
AMD Ryzen 9 3900
AMD Ryzen 9 3900 Image
AMD Epyc 7251
AMD Epyc 7251 Image
AMD Ryzen 9 3900
AMD Epyc 7251
Key Differences Key Differences AMD Ryzen 9 3900 AMD Epyc 7251
Cores 12 8
CPU Threads 24 16
Base Clock Speed 3.1GHz 2.1GHz
Turbo Clock Speed 4.3GHz 2.9GHz
TDP (THERMAL DESIGN POINT) 65W 120W
Has integrated graphics No No
Performance per watt 163.0 Not Known
Performance Performance AMD Ryzen 9 3900 AMD Epyc 7251
CPU Speed & Cores 12 x 3.1GHz 8 x 2.1GHz
Number of CPU Threads 24 16
L2 Cache Size 6MB 4MB
L3 Cache Size 64MB 32MB
Turbo Boost Frequency 4.3GHz 2.9GHz
L1 Cache Size 768KB 768KB
L2 Core 0.5MB/core 0.5MB/core
L3 Core 5.33MB/core 4MB/core
Does it have an unlocked multiplier Yes No
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
Clock Multiplier Not Known 21
Features Features AMD Ryzen 9 3900 AMD Epyc 7251
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 Ryzen 9 3900 AMD Epyc 7251
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 7nm 14nm
TDP (Thermal Design Point) 65W 120W
PCI Express Version 4 3
CPU Temperature 95°C Not Known
Does it have Integrated Graphics No No
Transistor Count Not Known 19200 million
Supports Power Optimized L2 Cache No No
Memory Memory AMD Ryzen 9 3900 AMD Epyc 7251
RAM Memory Speed 3200MHz 2400MHz
Max Memory Bandwidth 47.68GB/s 307GB/s
Max Memory Channels 2 8
Supported Memory Size 128GB 2000GB
DDR Type Memory Version 4 Not Known
ECC (Error-Correcting Code) Memory Support No Yes
Benchmarks Benchmarks AMD Ryzen 9 3900 AMD Epyc 7251
PassMark Score 30887 10771
PassMark Score (Single Thread) 2649 1523
Blender Score (bmw27) 132.5seconds Not Known
Blender Score (Classroom) 446.6seconds Not Known
Geekbench 5 Score (Multi-Thread) 10598 Not Known
Geekbench 5 Score (Single Thread) 1190 Not Known
PassMark Score (Overclocked) 31671 Not Known
CPU Performance (Per Watt) 163.0 Not Known

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