In depth comparison and review of Intel Xeon E5520 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 | Intel Xeon E5520 | AMD EPYC 7251 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Xeon E5520 | AMD EPYC 7251 |
|---|
| Type | Intel Xeon E5520 | AMD EPYC 7251 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Packaging Type | FC-LGA8 | - |
| Compatible Processor Socket | LGA1366 Socket | Socket SP3 |
| Core Voltage | 1.4 V | - |
| Manufacturing Process | 45 nm | - |
| Thermal Design Power | 80 W | 120 W |
| Thermal Specification | 76 °C | - |
| PCI Express Revision | - | 3.0 |
| PCI Express Lanes Qty | - | 128 |
| Architecture Features | Hyper-Threading Technology, Intel Intelligent Power Technology, Intel Data Center Manager | "Zen" Core Architecture |
| PERFORMANCE |
|---|
| Number of Cores | Quad-Core | 8-core |
|---|---|---|
| Number of Threads | 8 threads | 16 threads |
| Clock Speed (Frequency) | 2.26 GHz | 2.1 GHz |
| Max Turbo Speed | 2.53 GHz | 2.9 GHz |
| Bus Speed | 1066 MHz | - |
| 64-bit Computing | Yes | - |
| CACHE MEMORY |
|---|
| Cache | 8 MB | 32 MB |
|---|---|---|
| Cache Memory Details | Smart Cache - 8 MB | L3 - 32 MB L2 - 4 MB |
| Installed Size | 8 MB | - |
| Type | Advanced Smart Cache | - |
| RAM |
|---|
| Technology | DDR3 SDRAM - 1066 MHz | - |
|---|
| EXPANSION & CONNECTIVITY | Intel Xeon E5520 | AMD EPYC 7251 |
|---|
| Compatible Slots | 1 x processor | - |
|---|
| MISCELLANEOUS | Intel Xeon E5520 | AMD EPYC 7251 |
|---|
| Included Accessories | Heat sink | Heat sink |
|---|---|---|
| Compliant Standards | RoHS | - |
| Service & Support | 1-year warranty | - |
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