In depth comparison and review of AMD Phenom II X4 945 and AMD EPYC 7251. Compare dimensions, performance, cache memory, number of cores, clock speed, RAM, power efficiency and other important specifications and features to easily choose the right CPU for you. Our goal is to help you uncover differences between the products and find the processor that will best fit your needs.
| GENERAL | AMD Phenom II X4 945 | AMD EPYC 7251 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | AMD Phenom II X4 945 | AMD EPYC 7251 |
|---|
| Type | AMD Phenom II X4 945 | AMD EPYC 7251 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Max Supported Qty | 1 | - |
| Compatible Processor Socket | Socket AM3 | Socket SP3 |
| Power Efficiency | Energy Efficient | - |
| Manufacturing Process | 45 nm | - |
| Thermal Design Power | 95 W | 120 W |
| Thermal Specification | 71 °C | - |
| PCI Express Revision | - | 3.0 |
| PCI Express Lanes Qty | - | 128 |
| Architecture Features | HyperTransport technology, AMD64 technology, integrated memory controller, Enhanced Virus Protection, AMD Cool'n'Quiet Technology, AMD Virtualization, AMD CoolCore Technology | "Zen" Core Architecture |
| PERFORMANCE |
|---|
| Number of Cores | Quad-Core | 8-core |
|---|---|---|
| Number of Threads | - | 16 threads |
| Clock Speed (Frequency) | 3 GHz | 2.1 GHz |
| Max Turbo Speed | - | 2.9 GHz |
| 64-bit Computing | Yes | - |
| CACHE MEMORY |
|---|
| Cache | - | 32 MB |
|---|---|---|
| Cache Memory Details | L2 - 4 x 512 KB L3 - 6 MB |
L3 - 32 MB L2 - 4 MB |
| Installed Size | 6 MB | - |
| EXPANSION & CONNECTIVITY | AMD Phenom II X4 945 | AMD EPYC 7251 |
|---|
| Compatible Slots | 1 x processor - Socket AM3 | - |
|---|
| MISCELLANEOUS | AMD Phenom II X4 945 | AMD EPYC 7251 |
|---|
| Included Accessories | - | Heat sink |
|---|---|---|
| Service & Support | Limited warranty - 3 years | - |
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