AMD Ryzen 9 3900X vs AMD Phenom II X4 955

VS
AMD Ryzen 9 3900X
AMD Ryzen 9 3900X Image
AMD Phenom II X4 955
AMD Phenom II X4 955 Image
AMD Ryzen 9 3900X
AMD Phenom II X4 955
Key Differences Key Differences AMD Ryzen 9 3900X AMD Phenom II X4 955
Cores 12 4
CPU Threads 24 4
Base Clock Speed 3.8GHz 3.2GHz
Turbo Clock Speed 4.6GHz Not Known
TDP (THERMAL DESIGN POINT) 105W 125W
Has integrated graphics No No
Performance per watt 113.0 49.0
Performance Performance AMD Ryzen 9 3900X AMD Phenom II X4 955
CPU Speed & Cores 12 x 3.8GHz 4 x 3.2GHz
Number of CPU Threads 24 4
L2 Cache Size 6MB 2MB
L3 Cache Size 64MB 6MB
Turbo Boost Frequency 4.6GHz Not Known
L1 Cache Size 768KB 512KB
L2 Core 0.5MB/core 0.5MB/core
Does it have an unlocked multiplier Yes Yes
L3 Core 5.33MB/core 1.5MB/core
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
Clock Multiplier Not Known 16
Features Features AMD Ryzen 9 3900X AMD Phenom II X4 955
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 FMA3 Instructions Support Yes No
Supports CPU Throttling No Yes
Supports ARM TrustZone Tech No No
Has NX Processor Bit Support No Yes
General info General info AMD Ryzen 9 3900X AMD Phenom II X4 955
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 7nm 45nm
TDP (Thermal Design Point) 105W 125W
PCI Express Version 4 2
CPU Temperature 95°C Not Known
Does it have Integrated Graphics No No
Transistor Count Not Known 758 million
Supports Power Optimized L2 Cache No No
Memory Memory AMD Ryzen 9 3900X AMD Phenom II X4 955
RAM Memory Speed 3200MHz 1333MHz
Max Memory Bandwidth 47.68GB/s 21.3GB/s
Max Memory Channels 2 2
Supported Memory Size 128GB Not Known
ECC (Error-Correcting Code) Memory Support Yes No
DDR Type Memory Version 4 Not Known
Benchmarks Benchmarks AMD Ryzen 9 3900X AMD Phenom II X4 955
PassMark Score 32866 4023
PassMark Score (Single Thread) 2732 1121
Geekbench 5 Score (Multi-Thread) 11864 Not Known
Cinebench R20 Score (Single Thread) 521 Not Known
Cinebench R20 Score (Multi-Thread) 7178 Not Known
Geekbench 5 Score (Single Thread) 1282 Not Known
Blender Score (Classroom) 353.3seconds Not Known
Blender Score (bmw27) 116.4seconds Not Known
PassMark Score (Overclocked) 33293 4754
CPU Performance (Per Watt) 113.0 49.0

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