AMD Epyc 7551 vs AMD Phenom II X940 Black Edition
VS
AMD Epyc 7551
AMD Phenom II X940 Black Edition
Key Differences
Performance
Features
General info
Memory
Benchmarks
AMD Epyc 7551
AMD Phenom II X940 Black Edition
Key Differences
|
AMD Epyc 7551 | AMD Phenom II X940 Black Edition |
|---|---|---|
| Cores | 32 | 4 |
| CPU Threads | 64 | 4 |
| Base Clock Speed | 2GHz | 2.4GHz |
| Turbo Clock Speed | 3GHz | Not Known |
| TDP (THERMAL DESIGN POINT) | 180W | 45W |
| Has integrated graphics |  No
|
No
|
| Performance per watt | Not Known | Not Known |
Performance
|
AMD Epyc 7551 | AMD Phenom II X940 Black Edition |
|---|---|---|
| CPU Speed & Cores | 32 x 2GHz | 4 x 2.4GHz |
| Number of CPU Threads | 64 | 4 |
| L2 Cache Size | 16MB | 2MB |
| L3 Cache Size | 64MB | Not Known |
| Turbo Boost Frequency | 3GHz | Not Known |
| L1 Cache Size | 3072KB | 512KB |
| L2 Core | 0.5MB/core | 0.5MB/core |
| L3 Core | 2MB/core | Not Known |
| Does it have an unlocked multiplier | No
|
 Yes
|
| Uses ARM big.LITTLE tech | No
|
No
|
| Uses ARM HMP | No
|
No
|
| Clock Multiplier | Not Known | 12 |
Features
|
AMD Epyc 7551 | AMD Phenom II X940 Black Edition |
|---|---|---|
| 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 NX Processor Bit Support | Yes
|
Yes
|
| Has FMA3 Instructions Support | Yes
|
No
|
| Supports CPU Throttling | No
|
Yes
|
| Supports ARM TrustZone Tech | No
|
No
|
| Has FMA4 Instructions Support | No
|
No
|
| Has Multithreading Tech Support | No
|
No
|
General info
|
AMD Epyc 7551 | AMD Phenom II X940 Black Edition |
|---|---|---|
| Has 64-bit Support | No Data Found | No Data Found |
| Semiconductor Size | 14nm | 45nm |
| TDP (Thermal Design Point) | 180W | 45W |
| PCI Express Version | 3 | Not Known |
| Transistor Count | 19200 million | Not Known |
| Does it have Integrated Graphics | No
|
No
|
| Supports Power Optimized L2 Cache | No
|
No
|
Memory
|
AMD Epyc 7551 | AMD Phenom II X940 Black Edition |
|---|---|---|
| RAM Memory Speed | 2666MHz | Not Known |
| Max Memory Bandwidth | 341GB/s | Not Known |
| Max Memory Channels | 8 | Not Known |
| Supported Memory Size | 2000GB | Not Known |
| ECC (Error-Correcting Code) Memory Support | Yes
|
No
|
| DDR Type Memory Version | 4 | Not Known |
| Bus Frequency | Not Known | 1800GHz |
Benchmarks
|
AMD Epyc 7551 | AMD Phenom II X940 Black Edition |
|---|---|---|
| PassMark Score | 19606 | Not Known |
| PassMark Score (Single Thread) | 1660 | Not Known |
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