AMD Ryzen 9 3900 vs AMD Epyc 7281
VS
AMD Ryzen 9 3900
AMD Epyc 7281
Key Differences
Performance
Features
General info
Memory
Benchmarks
AMD Ryzen 9 3900
AMD Epyc 7281
Key Differences
|
AMD Ryzen 9 3900 | AMD Epyc 7281 |
|---|---|---|
| Cores | 12 | 16 |
| CPU Threads | 24 | 32 |
| Base Clock Speed | 3.1GHz | 2.1GHz |
| Turbo Clock Speed | 4.3GHz | 2.7GHz |
| TDP (THERMAL DESIGN POINT) | 65W | 155W |
| Has integrated graphics |  No
|
No
|
| Performance per watt | 163.0 | Not Known |
Performance
|
AMD Ryzen 9 3900 | AMD Epyc 7281 |
|---|---|---|
| CPU Speed & Cores | 12 x 3.1GHz | 16 x 2.1GHz |
| Number of CPU Threads | 24 | 32 |
| L2 Cache Size | 6MB | 8MB |
| L3 Cache Size | 64MB | 32MB |
| Turbo Boost Frequency | 4.3GHz | 2.7GHz |
| L1 Cache Size | 768KB | 1536KB |
| L2 Core | 0.5MB/core | 0.5MB/core |
| L3 Core | 5.33MB/core | 2MB/core |
| Does it have an unlocked multiplier |  Yes
|
No
|
| Uses ARM big.LITTLE tech | No
|
No
|
| Uses ARM HMP | No
|
No
|
Features
|
AMD Ryzen 9 3900 | AMD Epyc 7281 |
|---|---|---|
| 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
|
AMD Ryzen 9 3900 | AMD Epyc 7281 |
|---|---|---|
| Has 64-bit Support | No Data Found | No Data Found |
| Semiconductor Size | 7nm | 14nm |
| TDP (Thermal Design Point) | 65W | 155W |
| PCI Express Version | 4 | 3 |
| CPU Temperature | 95°C | Not Known |
| Does it have Integrated Graphics | No
|
No
|
| Supports Power Optimized L2 Cache | No
|
No
|
Memory
|
AMD Ryzen 9 3900 | AMD Epyc 7281 |
|---|---|---|
| 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
|
AMD Ryzen 9 3900 | AMD Epyc 7281 |
|---|---|---|
| PassMark Score | 30887 | 12720 |
| PassMark Score (Single Thread) | 2649 | 1429 |
| 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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