In depth comparison and review of Intel Xeon E5540 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 E5540 | AMD EPYC 7251 |
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Product Type | Processor | Processor |
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PROCESSOR | Intel Xeon E5540 | AMD EPYC 7251 |
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Type | Intel Xeon E5540 | AMD EPYC 7251 |
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ARCHITECTURE |
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Processor Qty | 1 | 1 |
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Compatible Processor Socket | LGA1366 Socket | Socket SP3 |
Core Voltage | 0.75 V - 1.35 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 | Enhanced SpeedStep technology, Demand Based Switching, Intel Virtualization Technology, Intel Turbo Boost Technology, Intel Dynamic Acceleration | "Zen" Core Architecture |
PERFORMANCE |
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Number of Cores | Quad-Core | 8-core |
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Number of Threads | 8 threads | 16 threads |
Clock Speed (Frequency) | 2.53 GHz | 2.1 GHz |
Max Turbo Speed | 2.8 GHz | 2.9 GHz |
Bus Speed | 1066 MHz | - |
64-bit Computing | Yes | - |
CACHE MEMORY |
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Cache | 8 MB | 32 MB |
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Cache Level 1 Size | 256 KB | - |
Cache Memory Details | L2 - SLC NAND Flash - 8 MB | L3 - 32 MB L2 - 4 MB |
Installed Size | 8 MB | - |
Type | SLC NAND Flash | - |
RAM |
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Technology | DDR3 SDRAM - 1066 MHz | - |
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EXPANSION & CONNECTIVITY | Intel Xeon E5540 | AMD EPYC 7251 |
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Compatible Slots | 1 x processor | - |
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MISCELLANEOUS | Intel Xeon E5540 | AMD EPYC 7251 |
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Included Accessories | Heat sink, voltage regulator module | Heat sink |
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Compliant Standards | RoHS | - |
Service & Support | Limited warranty - 1 year - on-site | - |