AMD Epyc 7642 vs AMD Athlon II X4 638
VS
AMD Epyc 7642
AMD Athlon II X4 638
Key Differences
Performance
Features
General info
Memory
Benchmarks
AMD Epyc 7642
AMD Athlon II X4 638
Key Differences
|
AMD Epyc 7642 | AMD Athlon II X4 638 |
|---|---|---|
| Cores | 48 | 4 |
| CPU Threads | 96 | 4 |
| Base Clock Speed | 2.3GHz | 2.7GHz |
| Turbo Clock Speed | 3.3GHz | Not Known |
| TDP (THERMAL DESIGN POINT) | 225W | 65W |
| Has integrated graphics |  No
|
No
|
| Performance per watt | Not Known | 55.0 |
Performance
|
AMD Epyc 7642 | AMD Athlon II X4 638 |
|---|---|---|
| CPU Speed & Cores | 48 x 2.3GHz | 4 x 2.7GHz |
| Number of CPU Threads | 96 | 4 |
| L2 Cache Size | 24MB | 4MB |
| L3 Cache Size | 256MB | Not Known |
| Turbo Boost Frequency | 3.3GHz | Not Known |
| L1 Cache Size | 3072KB | 512KB |
| L2 Core | 0.5MB/core | 1MB/core |
| L3 Core | 5.33MB/core | Not Known |
| Does it have an unlocked multiplier | No
|
No
|
| Uses ARM big.LITTLE tech | No
|
No
|
| Uses ARM HMP | No
|
No
|
Features
|
AMD Epyc 7642 | AMD Athlon II X4 638 |
|---|---|---|
| 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 NX Processor Bit Support | Yes
|
Yes
|
| Has FMA3 Instructions Support | Yes
|
No
|
| Supports CPU Throttling | No
|
Yes
|
| Supports ARM TrustZone Tech | No
|
No
|
General info
|
AMD Epyc 7642 | AMD Athlon II X4 638 |
|---|---|---|
| Has 64-bit Support | No Data Found | No Data Found |
| Semiconductor Size | 14nm | 32nm |
| TDP (Thermal Design Point) | 225W | 65W |
| PCI Express Version | 4 | 2 |
| Does it have Integrated Graphics | No
|
No
|
| Transistor Count | Not Known | 1178 million |
| Supports Power Optimized L2 Cache | No
|
No
|
Memory
|
AMD Epyc 7642 | AMD Athlon II X4 638 |
|---|---|---|
| RAM Memory Speed | 3200MHz | 1866MHz |
| Max Memory Bandwidth | 190.7GB/s | Not Known |
| Max Memory Channels | 8 | 2 |
| Supported Memory Size | 4000GB | Not Known |
| ECC (Error-Correcting Code) Memory Support | Yes
|
No
|
| DDR Type Memory Version | 4 | Not Known |
Benchmarks
|
AMD Epyc 7642 | AMD Athlon II X4 638 |
|---|---|---|
| CPU Performance (Per Watt) | Not Known | 55.0 |
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