AMD Ryzen 9 3900X vs AMD Phenom II X4 975
VS
AMD Ryzen 9 3900X
AMD Phenom II X4 975
Key Differences
Performance
Features
General info
Memory
Benchmarks
AMD Ryzen 9 3900X
AMD Phenom II X4 975
Key Differences
|
AMD Ryzen 9 3900X | AMD Phenom II X4 975 |
|---|---|---|
| Cores | 12 | 4 |
| CPU Threads | 24 | 4 |
| Base Clock Speed | 3.8GHz | 3.6GHz |
| Turbo Clock Speed | 4.6GHz | Not Known |
| TDP (THERMAL DESIGN POINT) | 105W | 125W |
| Has integrated graphics |  No
|
No
|
| Performance per watt | 113.0 | 54.0 |
Performance
|
AMD Ryzen 9 3900X | AMD Phenom II X4 975 |
|---|---|---|
| CPU Speed & Cores | 12 x 3.8GHz | 4 x 3.6GHz |
| 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 | 18 |
Features
|
AMD Ryzen 9 3900X | 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 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
|
AMD Ryzen 9 3900X | AMD Phenom II X4 975 |
|---|---|---|
| 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
|
AMD Ryzen 9 3900X | AMD Phenom II X4 975 |
|---|---|---|
| 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
|
AMD Ryzen 9 3900X | AMD Phenom II X4 975 |
|---|---|---|
| PassMark Score | 32866 | 4697 |
| PassMark Score (Single Thread) | 2732 | 1285 |
| 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 | 5208 |
| CPU Performance (Per Watt) | 113.0 | 54.0 |
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