AMD® EPYC™ 7251

The AMD EPYC 7251 is a server processor with 8 cores and 16 threads, built on the Zen architecture (14 nm process). It launched in Jun 2017. Clocks run from 2.1 GHz base to 2.9 GHz boost. A 32-MB L3 cache backs the cores (4.6 MB per core). The chip drops into the SP3 socket and exposes PCIe 3.0 (128 lanes). Rated TDP is 120 W. Notable platform capabilities: AMD-V (Hardware Virtualization), AMD SEV.

The AMD EPYC 7251 scores 1,671 in single-core performance and 14,935 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 4,996 for overall performance, 12,047 for productivity performance, 11,222 for creator performance, 15,308 for engineering performance and 8,747 for gaming performance. Its multi-core throughput works out to 1,867 per core, 933 per thread and 125 per watt. Its computed efficiency index is 456. Its performance index is 62, so its overall performance is 38% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the AMD EPYC 7251 scores 47,632 in integer math, 24,731 in floating-point math, 202,333 in compression, 14,300 in cryptography, 1,213 in physics simulation, 7,537 in vector SIMD, 58 in the prime sieve and 24,665 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 19% below in integer math, 46% below in floating-point math, 11% below in compression, 24% above in cryptography, 11% above in physics simulation, 51% below in vector SIMD, 13% below in the prime sieve and 9% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The AMD EPYC 7251 has 8 physical cores and runs 16 logical threads. It does not use a hybrid performance and efficiency core layout. It runs 2 threads per core. It runs at a base clock of 2.10 GHz and boosts up to 2.90 GHz.

The AMD EPYC 7251 is a server processor, belongs to the AMD EPYC family, uses the Zen architecture and is manufactured on a 14 nm process. It launched in Jun 2017.

The AMD EPYC 7251 has 768 KB of L1 cache, 4 MB of L2 cache and 32 MB of L3 cache. That adds up to about 36.8 MB of cache, or 4.59 MB per core. Each core has 512 KB of private L2 cache.

The AMD EPYC 7251 has a 3-level cache hierarchy: L1 at 768 KB, L2 at 4 MB and L3 at 32 MB. L3 is the largest level and makes up about 87% of the cache listed here.

The AMD EPYC 7251 uses the SP3 socket, supports PCI Express 3.0 and provides up to 128 PCIe lanes.

The AMD EPYC 7251 has a rated TDP of 120 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The AMD EPYC 7251 is manufactured by GlobalFoundries. It launched at a price of $475.

Feex has recorded 49% of the specifications it tracks for the AMD EPYC 7251. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: Codename, ISA Family and Market Status. Cache: L4 Cache. Memory Support: Max Memory, Memory Channels, Memory Bandwidth, Memory Types, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Graphics: Integrated Graphics, Graphics Model, Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size and Die Count. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors that use the same SP3 socket as the AMD EPYC 7251 and have the closest multi-core scores in the Feex database include AMD EPYC 7301, AMD EPYC 7232P, AMD EPYC 7252, AMD EPYC 7261 and AMD EPYC 7262.