AMD Epyc 7742 vs AMD Phenom II X4 975

VS
AMD Epyc 7742
AMD Epyc 7742 Image
AMD Phenom II X4 975
AMD Phenom II X4 975 Image
AMD Epyc 7742
AMD Phenom II X4 975
Key Differences Key Differences AMD Epyc 7742 AMD Phenom II X4 975
Cores 64 4
CPU Threads 128 4
Base Clock Speed 2.25GHz 3.6GHz
Turbo Clock Speed 3.4GHz Not Known
TDP (THERMAL DESIGN POINT) 225W 125W
Has integrated graphics No No
Performance per watt 66.7 54.0
Performance Performance AMD Epyc 7742 AMD Phenom II X4 975
CPU Speed & Cores 64 x 2.25GHz 4 x 3.6GHz
Number of CPU Threads 128 4
L2 Cache Size 32MB 2MB
L3 Cache Size 256MB 6MB
Turbo Boost Frequency 3.4GHz Not Known
L1 Cache Size 4096KB 512KB
L2 Core 0.5MB/core 0.5MB/core
L3 Core 4MB/core 1.5MB/core
Does it have an unlocked multiplier No Yes
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
Clock Multiplier Not Known 18
Features Features AMD Epyc 7742 AMD Phenom II X4 975
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 7742 AMD Phenom II X4 975
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 45nm
TDP (Thermal Design Point) 225W 125W
PCI Express Version 4 2
Does it have Integrated Graphics No No
Transistor Count Not Known 758 million
Supports Power Optimized L2 Cache No No
Memory Memory AMD Epyc 7742 AMD Phenom II X4 975
RAM Memory Speed 3200MHz 1333MHz
Max Memory Bandwidth 190.7GB/s 21.3GB/s
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 7742 AMD Phenom II X4 975
PassMark Score 67185 4697
PassMark Score (Single Thread) 2376 1285
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 54.0
PassMark Score (Overclocked) Not Known 5208

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