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AMD EPYC 7281 vs AMD EPYC 7251
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CPU comparison with benchmarks
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| AMD EPYC 7281 | AMD EPYC 7251 | |
CPU comparisonIn this CPU comparison, we compare the AMD EPYC 7281 and the AMD EPYC 7251 and use benchmarks to check which processor is faster.
We compare the AMD EPYC 7281 16 core processor released in Q3/2017 with the AMD EPYC 7251 which has 8 CPU cores and was introduced in Q3/2017. |
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| AMD EPYC (145) | Family | AMD EPYC (145) |
| AMD EPYC 7001 (12) | CPU group | AMD EPYC 7001 (12) |
| 1 | Generation | 1 |
| Naples (Zen) | Architecture | Naples (Zen) |
| Server | Segment | Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 7281 is a 16 core processor with a clock frequency of 2.20 GHz (2.70 GHz). The processor can compute 32 threads at the same time. The AMD EPYC 7251 clocks with 2.10 GHz (2.90 GHz), has 8 CPU cores and can calculate 16 threads in parallel. |
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| AMD EPYC 7281 | Characteristic | AMD EPYC 7251 |
| 16 | Cores | 8 |
| 32 | Threads | 16 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 2.20 GHz | Frequency | 2.10 GHz |
| 2.70 GHz | Turbo Frequency (1 Core) | 2.90 GHz |
| 2.70 GHz | Turbo Frequency (All Cores) | 2.90 GHz |
Memory & PCIeUp to GB of memory in a maximum of 8 memory channels is supported by the AMD EPYC 7281, while the AMD EPYC 7251 supports a maximum of GB of memory with a maximum memory bandwidth of 153.6 GB/s enabled. |
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| AMD EPYC 7281 | Characteristic | AMD EPYC 7251 |
| DDR4-2666 | Memory | DDR4-2666 |
| Max. Memory | ||
| 8 (Octa Channel) | Memory channels | 8 (Octa Channel) |
| 170.6 GB/s | Max. Bandwidth | 153.6 GB/s |
| Yes | ECC | Yes |
| -- | L2 Cache | -- |
| 32.00 MB | L3 Cache | 32.00 MB |
| 3.0 | PCIe version | 3.0 |
| 128 | PCIe lanes | 128 |
| 126.1 GB/s | PCIe Bandwidth | 126.1 GB/s |
Thermal ManagementThe AMD EPYC 7281 has a TDP of 170 W. The TDP of the AMD EPYC 7251 is 120 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| AMD EPYC 7281 | Characteristic | AMD EPYC 7251 |
| 170 W | TDP (PL1 / PBP) | 120 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7281 has 32.00 MB cache and is manufactured in 14 nm. The cache of AMD EPYC 7251 is at 32.00 MB. The processor is manufactured in 14 nm. |
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| AMD EPYC 7281 | Characteristic | AMD EPYC 7251 |
| 14 nm | Technology | 14 nm |
| Chiplet | Chip design | Chiplet |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
| SP3 | Socket | SP3 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q3/2017 | Release date | Q3/2017 |
| 625 $ | Release price | 450 $ |
| show more data | show more data | |
16C 32T @ 2.20 GHz (2.70 GHz) buy now on Amazon and save!
8C 16T @ 2.10 GHz (2.90 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 2 CPU benchmarks
⌀ Multi core performance in 3 CPU benchmarks
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Geekbench 6 (Multi-Core)
The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
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AMD EPYC 7281
16C 32T @ 2.70 GHz |
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AMD EPYC 7251
8C 16T @ 2.90 GHz |
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Devices using this processor |
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| AMD EPYC 7281 | AMD EPYC 7251 |
| Unknown | Unknown |
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