AMD EPYC 7251 | AMD EPYC 7551 | |
CPU comparisonAMD EPYC 7251 or AMD EPYC 7551 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The AMD EPYC 7251 has 8 cores with 16 threads and clocks with a maximum frequency of 2.90 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7251 was released in Q3/2017. The AMD EPYC 7551 has 32 cores with 64 threads and clocks with a maximum frequency of 3.00 GHz. The CPU supports up to GB of memory in 8 memory channels. The AMD EPYC 7551 was released in Q3/2017. |
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AMD EPYC (129) | Family | AMD EPYC (129) |
AMD EPYC 7001 (12) | CPU group | AMD EPYC 7001 (12) |
1 | Generation | 1 |
Naples (Zen) | Architecture | Naples (Zen) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | AMD EPYC 7552 |
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CPU Cores and Base FrequencyThe AMD EPYC 7251 has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD EPYC 7251 is 2.10 GHz (2.90 GHz) while the AMD EPYC 7551 has 32 CPU cores and 64 threads can calculate simultaneously. The clock frequency of the AMD EPYC 7551 is at 2.00 GHz (3.00 GHz). |
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AMD EPYC 7251 | Characteristic | AMD EPYC 7551 |
8 | Cores | 32 |
16 | Threads | 64 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | No |
2.10 GHz | Frequency | 2.00 GHz |
2.90 GHz | Turbo Frequency (1 Core) | 3.00 GHz |
2.90 GHz | Turbo Frequency (All Cores) | 2.55 GHz |
Memory & PCIeThe AMD EPYC 7251 can use up to GB of memory in 8 memory channels. The maximum memory bandwidth is 153.6 GB/s. The AMD EPYC 7551 supports up to GB of memory in 8 memory channels and achieves a memory bandwidth of up to 170.6 GB/s. |
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AMD EPYC 7251 | Characteristic | AMD EPYC 7551 |
DDR4-2666 | Memory | DDR4-2666 |
Max. Memory | ||
8 (Octa Channel) | Memory channels | 8 (Octa Channel) |
153.6 GB/s | Max. Bandwidth | 170.6 GB/s |
Yes | ECC | Yes |
-- | L2 Cache | -- |
32.00 MB | L3 Cache | 64.00 MB |
3.0 | PCIe version | 3.0 |
128 | PCIe lanes | 128 |
126.1 GB/s | PCIe Bandwidth | 126.1 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7251 is 120 W, while the AMD EPYC 7551 has a TDP of 180 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD EPYC 7251 | Characteristic | AMD EPYC 7551 |
120 W | TDP (PL1 / PBP) | 180 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7251 is manufactured in 14 nm and has 32.00 MB cache. The AMD EPYC 7551 is manufactured in 14 nm and has a 64.00 MB cache. |
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AMD EPYC 7251 | Characteristic | AMD EPYC 7551 |
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 |
450 $ | Release price | 3200 $ |
show more data | show more data | |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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AMD EPYC 7551
32C 64T @ 3.00 GHz |
AMD EPYC 7251
8C 16T @ 2.90 GHz |
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AMD EPYC 7551
32C 64T @ 2.55 GHz |
Devices using this processor |
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AMD EPYC 7251 | AMD EPYC 7551 |
Unknown | Unknown |