AMD Epyc 7742 vs AMD Epyc 7551
VS
AMD Epyc 7742
AMD Epyc 7551
Key Differences
Performance
Features
General info
Memory
Benchmarks
AMD Epyc 7742
AMD Epyc 7551
Key Differences
|
AMD Epyc 7742 | AMD Epyc 7551 |
|---|---|---|
| Cores | 64 | 32 |
| CPU Threads | 128 | 64 |
| Base Clock Speed | 2.25GHz | 2GHz |
| Turbo Clock Speed | 3.4GHz | 3GHz |
| TDP (THERMAL DESIGN POINT) | 225W | 180W |
| Has integrated graphics |  No
|
No
|
| Performance per watt | 66.7 | Not Known |
Performance
|
AMD Epyc 7742 | AMD Epyc 7551 |
|---|---|---|
| CPU Speed & Cores | 64 x 2.25GHz | 32 x 2GHz |
| Number of CPU Threads | 128 | 64 |
| L2 Cache Size | 32MB | 16MB |
| L3 Cache Size | 256MB | 64MB |
| Turbo Boost Frequency | 3.4GHz | 3GHz |
| L1 Cache Size | 4096KB | 3072KB |
| L2 Core | 0.5MB/core | 0.5MB/core |
| L3 Core | 4MB/core | 2MB/core |
| Does it have an unlocked multiplier | No
|
No
|
| Uses ARM big.LITTLE tech | No
|
No
|
| Uses ARM HMP | No
|
No
|
Features
|
AMD Epyc 7742 | AMD Epyc 7551 |
|---|---|---|
| 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 Epyc 7742 | AMD Epyc 7551 |
|---|---|---|
| Has 64-bit Support | No Data Found | No Data Found |
| Semiconductor Size | 14nm | 14nm |
| TDP (Thermal Design Point) | 225W | 180W |
| PCI Express Version | 4 | 3 |
| Does it have Integrated Graphics | No
|
No
|
| Transistor Count | Not Known | 19200 million |
| Supports Power Optimized L2 Cache | No
|
No
|
Memory
|
AMD Epyc 7742 | AMD Epyc 7551 |
|---|---|---|
| RAM Memory Speed | 3200MHz | 2666MHz |
| Max Memory Bandwidth | 190.7GB/s | 341GB/s |
| Max Memory Channels | 8 | 8 |
| Supported Memory Size | 4000GB | 2000GB |
| ECC (Error-Correcting Code) Memory Support | Yes
|
Yes
|
| DDR Type Memory Version | 4 | 4 |
Benchmarks
|
AMD Epyc 7742 | AMD Epyc 7551 |
|---|---|---|
| PassMark Score | 67185 | 19606 |
| PassMark Score (Single Thread) | 2376 | 1660 |
| 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 | Not Known |
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