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AMD EPYC 7543 vs AMD EPYC Embedded 7551: Comparison
EPYC 7543 vs EPYC Embedded 7551: the l3 cache difference
L3 cache is where these two genuinely part company, EPYC 7543 256 MB against EPYC Embedded 7551 64 MB, a 75% lead for EPYC 7543. Boost clock is not the same on both, Up to 3.7 GHz on the EPYC 7543 versus 3 GHz on the EPYC Embedded 7551. Tdp is not the same on both, 225 W on the EPYC 7543 versus 180 W on the EPYC Embedded 7551. There is a split on base clock as well, 2.8 GHz on the EPYC 7543 versus 2 GHz on the EPYC Embedded 7551.
Which should you buy, EPYC 7543 or EPYC Embedded 7551?
Buy the EPYC 7543 for datacenter and cloud compute and virtualization-dense server workloads, though it is the wrong buy for consumer desktop builds and single-threaded latency-sensitive workloads on lower core-count SKUs. The EPYC Embedded 7551 suits industrial and embedded system designs and long-lifecycle networking and edge-compute deployments, though it is not the pick for consumer desktop or gaming builds and DIY PC upgrades.
What EPYC 7543 and EPYC Embedded 7551 have in common
Where they agree, they agree completely, pcie lanes, core count, thread count and socket included, so the decision does not turn on any of those.
Specs and benchmarks
Core Count
- AMD EPYC 7543
- 32 cores
- AMD EPYC Embedded 7551
- 32 cores
Thread Count
- AMD EPYC 7543
- 64 threads
- AMD EPYC Embedded 7551
- 64 threads
Base Clock
- AMD EPYC 7543
- 2.8 GHz
- AMD EPYC Embedded 7551
- 2 GHz
Boost Clock
- AMD EPYC 7543
- Up to 3.7 GHz
- AMD EPYC Embedded 7551
- 3 GHz
L3 Cache
- AMD EPYC 7543
- 256 MBBest
- AMD EPYC Embedded 7551
- 64 MB-75%
Socket
- AMD EPYC 7543
- SP3
- AMD EPYC Embedded 7551
- SP3
PCIe Lanes
- AMD EPYC 7543
- 128 lanes
- AMD EPYC Embedded 7551
- 128 lanes
TDP
- AMD EPYC 7543
- 225 W
- AMD EPYC Embedded 7551
- 180 W
Which one should you pick?
Choose 7543 if you want the higher L3 cache (256 MB vs 64 MB) and the higher PCIe lanes (128 lanes vs 128 lanes).
Choose 7551 if you already have it on hand or find it at a lower price.