AMD EPYC 7351P vs AMD EPYC 7451 Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive outcome: the AMD EPYC 7351P wins every single recorded comparison in this head-to-head matchup. Across six Cinebench tests, the 7351P holds a consistent 7.6% advantage over the EPYC 7451 in every workload, whether single-threaded or fully multi-threaded. That uniformity is striking, as it suggests the performance gap is not tied to scaling or thread count but to a fundamental per-core efficiency difference.

In Cinebench R23 multi-core, the EPYC 7351P scores 22135 against the EPYC 7451's 20450. The 7.6% delta repeats exactly in Cinebench R23 single-core, with the 7351P posting 3125 versus 2887. The same pattern holds in Cinebench R20: the 7351P reaches 9296 in multi-core and 1312 in single-core, while the 7451 manages 8589 and 1212 respectively. Even the oldest test in the set, Cinebench R15, shows the identical 7.6% gap: the 7351P earns 2231 multi-core and 314 single-core, compared to 2061 and 290 for the 7451.

There is no test where the EPYC 7451 comes out ahead. The data records zero wins for the 7451 and six wins for the 7351P. What makes this notable is that the 7451 is the higher-core-count part, carrying 24 cores and 48 threads versus 16 cores and 32 threads on the 7351P. Despite having 50% more cores, the 7451 trails in every measured workload, which points to clock speed and per-core performance as the decisive factors rather than raw core count.

The average benchmark scores in the database reinforce this picture, though with a different framing. The EPYC 7451 has an average benchmark score of 5915, while the EPYC 7351P sits at 5469. This broader average includes a wider set of workloads beyond the Cinebench family, and in that aggregate the 7451 actually leads. The head-to-head tests, however, are exclusively Cinebench, and there the 7351P is uniformly faster.

The nearest rival data for each chip provides context for how these two parts sit in the wider market. The EPYC 7451's average score of 5915 places it within 0% of the Intel Core i9-9920X, which scores 5917, and 1.2% behind the Intel Xeon W-2170B at 5985. It is 1.7% ahead of the AMD EPYC 7401P at 5814 and 1.9% ahead of the Intel Xeon E-2388G at 5805. The EPYC 7351P, with its 5469 average, is 0.5% ahead of the Intel Xeon W-1290P at 5443 and 0.8% ahead of the AMD Ryzen Threadripper 1920 at 5425, while sitting 1.5% behind the Intel Core i9-10900X at 5555 and 1.7% behind the Intel Celeron G6900 at 5561. Both chips occupy the 61st percentile among all CPUs in the database, meaning they land in the same overall performance tier despite their head-to-head differences in specific tests.

Architecture Differences

Both processors belong to the EPYC 7001 series and share the same fundamental silicon. They use AMD's Zen architecture with the Naples codename, built on a 14 nm process at GlobalFoundries. Both have identical transistor counts of 4,800 million and the same die size of 213 mm². They run on the AMD Socket SP3 platform and support DDR4 memory across an eight-channel memory bus with a peak bandwidth of 170.6 GB/s. ECC memory is supported on both, and both provide PCIe Gen 3 connectivity. Neither includes integrated graphics, and both are classified for the Server/Workstation market segment.

The core and thread configurations differ significantly. The EPYC 7451 has 24 cores and 48 threads, while the EPYC 7351P has 16 cores and 32 threads. Clock speeds also differ, and here the 7351P has the advantage despite its smaller core count. The 7351P has a base clock of 2.40 GHz and a boost clock of 2.90 GHz. The 7451 runs at 2.30 GHz base and 3.20 GHz boost. The 7451 has a higher boost ceiling, but the 7351P starts from a higher base frequency, and the benchmark results suggest the 7351P sustains better real-world performance in the tested workloads.

Thermal design power is close but not identical. The 7451 is rated at 180 watts, while the 7351P draws 170 watts. The cache hierarchy is identical on paper: both have 96 KB of L1 per core, 512 KB of L2 per core, and 64 MB of shared L3. Both have unlocked multipliers, and both were released on the same date in 2017. The part numbers differ, as do the specific binning choices made by AMD for each SKU.

The architecture is the same generation and the same process, so the performance differences observed in the head-to-head benchmarks must come from the combination of core count, clock speeds, and binning. The 7351P's consistent 7.6% lead in both single-core and multi-core tests suggests that its higher base clock and possibly more favorable binning outweigh the 7451's additional eight cores and sixteen threads in these specific workloads.

FAQ

Q: Which processor wins in single-core performance?

A: The AMD EPYC 7351P wins every single-core test. It scores 314 in Cinebench R15, 1312 in Cinebench R20, and 3125 in Cinebench R23, each 7.6% ahead of the EPYC 7451's 290, 1212, and 2887 respectively.

Q: Does the EPYC 7451's higher core count help it in multi-core workloads?

A: No. Despite having 24 cores versus the 7351P's 16, the 7451 loses all three multi-core Cinebench tests by the same 7.6% margin. The 7351P scores 2231 in Cinebench R15, 9296 in R20, and 22135 in R23, while the 7451 scores 2061, 8589, and 20450.

Q: How do these chips compare in overall average benchmark score?

A: The EPYC 7451 has a higher average benchmark score of 5915, while the EPYC 7351P averages 5469. This aggregate includes a broader set of workloads than the Cinebench-only head-to-head tests.

Q: Are these processors built on the same architecture?

A: Yes. Both use the Zen architecture with the Naples codename, are manufactured on a 14 nm process at GlobalFoundries, and have identical transistor counts of 4,800 million and die sizes of 213 mm².

Q: What memory and platform features do they share?

A: Both support DDR4 memory with an eight-channel memory bus and 170.6 GB/s bandwidth, use the AMD Socket SP3 platform, support ECC memory, provide PCIe Gen 3, and have no integrated graphics.

Q: How do they rank against other CPUs in the database?

A: Both sit at the 61st percentile among all CPUs. The 7451's closest rival is the Intel Core i9-9920X with a 0% delta, while the 7351P's closest rival is the Intel Xeon W-1290P with a 0.5% delta.

Specification Differences

| Specification | AMD EPYC 7451 | AMD EPYC 7351P |

|---|---|---|

| Cores | 24 | 16 |

| Threads | 48 | 32 |

| Base clock | 2.30 GHz | 2.40 GHz |

| Boost clock | 3.20 GHz | 2.90 GHz |

| TDP | 180 W | 170 W |

| Part number | PS7451BDVHCAF | PS735PBEVGPAF |

All other recorded specifications are identical between the two. Both use the Zen architecture, the Naples codename, a 14 nm process, GlobalFoundries as the foundry, 4,800 million transistors, a 213 mm² die size, 96 KB L1 per core, 512 KB L2 per core, 64 MB shared L3, DDR4 memory support, an eight-channel memory bus, 170.6 GB/s memory bandwidth, ECC memory support, PCIe Gen 3, AMD Socket SP3, no integrated graphics, the Server/Workstation market segment, an unlocked multiplier, and the same release date.

Where Each One Wins

The AMD EPYC 7351P wins in every measured Cinebench workload. In single-core tests, it leads by 7.6% across Cinebench R15, R20, and R23, with scores of 314, 1312, and 3125 against the 7451's 290, 1212, and 2887. In multi-core tests, it also leads by 7.6%, posting 2231, 9296, and 22135 versus 2061, 8589, and 20450. The 7351P is the better choice for workloads that resemble Cinebench, where per-core performance and clock speed drive results.

The AMD EPYC 7451 wins in the broader average benchmark score, reaching 5915 compared to the 7351P's 5469. This aggregate measure, which draws on a wider range of tests beyond Cinebench, shows the 7451 in a more favorable light. The 7451 also offers more cores and threads, with 24 cores and 48 threads versus 16 cores and 32 threads, which can matter for workloads that scale beyond what the Cinebench suite captures. Its higher boost clock of 3.20 GHz versus 2.90 GHz also provides headroom for burst workloads that can leverage a single-core boost.

The 7451's nearest rival data shows it competing closely with the Intel Core i9-9920X at a 0% delta, while the 7351P's rival list includes the Intel Xeon W-1290P at 0.5% ahead. Both chips sit at the 61st percentile, so neither is dramatically out of place in the overall performance hierarchy.

The Verdict

The data points to a clear split. For Cinebench-style workloads, the AMD EPYC 7351P is the superior part, winning all six head-to-head tests by a consistent 7.6% margin. Its higher base clock of 2.40 GHz and lower core count of 16 deliver better results in both single-threaded and multi-threaded Cinebench runs. Anyone whose primary workload resembles these rendering tests should favor the 7351P based on the recorded benchmarks.

For broader workloads, the AMD EPYC 7451 has the stronger average benchmark score at 5915, and its 24 cores and 48 threads provide substantially more parallelism than the 7351P's 16 cores and 32 threads. The 7451 also has a higher boost clock at 3.20 GHz, which can benefit applications that scale well with core count or that rely on short bursts of high-frequency execution.

The thermal difference is minor: 180 watts for the 7451 versus 170 watts for the 7351P. Both chips share the same architecture, process node, cache layout, memory support, and platform, so the decision comes down to whether the workload favors the 7351P's per-core performance or the 7451's additional cores and higher aggregate average score. The recorded data shows the 7351P leading in every direct head-to-head test, while the 7451 leads in the wider benchmark average. Users should match the choice to their specific workload profile, using the Cinebench results as the guide for rendering and the average score as the guide for mixed or diverse compute tasks.