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AMD EPYC 7643P vs AMD EPYC Embedded 7451: Comparison
EPYC 7643P vs EPYC Embedded 7451 l3 cache compared
Start with l3 cache, because it is the widest measured gap between them: EPYC 7643P 256 MB against EPYC Embedded 7451 64 MB, 75% in favour of EPYC 7643P. They differ on boost clock too, Up to 3.6 GHz on the EPYC 7643P versus 3.2 GHz on the EPYC Embedded 7451. Tdp is not the same on both, 225 W on the EPYC 7643P versus 180 W on the EPYC Embedded 7451. There is a split on core count as well, 48 cores on the EPYC 7643P versus 24 cores on the EPYC Embedded 7451. They differ on thread count too, 96 threads on the EPYC 7643P versus 48 threads on the EPYC Embedded 7451.
Which should you buy, EPYC 7643P or EPYC Embedded 7451?
The EPYC 7643P is the one to take for datacenter and cloud compute and virtualization-dense server workloads, though it is not the pick for consumer desktop builds and single-threaded latency-sensitive workloads on lower core-count SKUs. Buy the EPYC Embedded 7451 for industrial and embedded system designs and long-lifecycle networking and edge-compute deployments, though it is not built for consumer desktop or gaming builds and DIY PC upgrades.
What EPYC 7643P and EPYC Embedded 7451 have in common
Where they agree, they agree completely, pcie lanes, base clock and socket included, so the decision does not turn on any of those.
Specs and benchmarks
Core Count
- AMD EPYC 7643P
- 48 cores
- AMD EPYC Embedded 7451
- 24 cores
Thread Count
- AMD EPYC 7643P
- 96 threads
- AMD EPYC Embedded 7451
- 48 threads
Base Clock
- AMD EPYC 7643P
- 2.3 GHz
- AMD EPYC Embedded 7451
- 2.3 GHz
Boost Clock
- AMD EPYC 7643P
- Up to 3.6 GHz
- AMD EPYC Embedded 7451
- 3.2 GHz
L3 Cache
- AMD EPYC 7643P
- 256 MBBest
- AMD EPYC Embedded 7451
- 64 MB-75%
Socket
- AMD EPYC 7643P
- SP3
- AMD EPYC Embedded 7451
- SP3
PCIe Lanes
- AMD EPYC 7643P
- 128 lanes
- AMD EPYC Embedded 7451
- 128 lanes
TDP
- AMD EPYC 7643P
- 225 W
- AMD EPYC Embedded 7451
- 180 W
Which one should you pick?
Choose 7643P if you want the higher L3 cache (256 MB vs 64 MB) and the higher PCIe lanes (128 lanes vs 128 lanes).
Choose 7451 if you already have it on hand or find it at a lower price.