AMD Epyc 7642 vs AMD Athlon II X4 638

VS
AMD Epyc 7642
AMD Epyc 7642 Image
AMD Athlon II X4 638
AMD Athlon II X4 638 Image
AMD Epyc 7642
AMD Athlon II X4 638
Key Differences Key Differences AMD Epyc 7642 AMD Athlon II X4 638
Cores 48 4
CPU Threads 96 4
Base Clock Speed 2.3GHz 2.7GHz
Turbo Clock Speed 3.3GHz Not Known
TDP (THERMAL DESIGN POINT) 225W 65W
Has integrated graphics No No
Performance per watt Not Known 55.0
Performance Performance AMD Epyc 7642 AMD Athlon II X4 638
CPU Speed & Cores 48 x 2.3GHz 4 x 2.7GHz
Number of CPU Threads 96 4
L2 Cache Size 24MB 4MB
L3 Cache Size 256MB Not Known
Turbo Boost Frequency 3.3GHz Not Known
L1 Cache Size 3072KB 512KB
L2 Core 0.5MB/core 1MB/core
L3 Core 5.33MB/core Not Known
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 Athlon II X4 638
Has AES Support Yes No
Supported SSE Version 4.2 4
Has AVX Support Yes No
Has MMX Tech Support Yes Yes
Has F16C Support Yes No
Has FMA4 Instructions Support No No
Has Multithreading Tech Support Yes No
Has NX Processor Bit Support Yes Yes
Has FMA3 Instructions Support Yes No
Supports CPU Throttling No Yes
Supports ARM TrustZone Tech No No
General info General info AMD Epyc 7642 AMD Athlon II X4 638
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 32nm
TDP (Thermal Design Point) 225W 65W
PCI Express Version 4 2
Does it have Integrated Graphics No No
Transistor Count Not Known 1178 million
Supports Power Optimized L2 Cache No No
Memory Memory AMD Epyc 7642 AMD Athlon II X4 638
RAM Memory Speed 3200MHz 1866MHz
Max Memory Bandwidth 190.7GB/s Not Known
Max Memory Channels 8 2
Supported Memory Size 4000GB Not Known
ECC (Error-Correcting Code) Memory Support Yes No
DDR Type Memory Version 4 Not Known
Benchmarks Benchmarks AMD Epyc 7642 AMD Athlon II X4 638
CPU Performance (Per Watt) Not Known 55.0

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