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AMD EPYC 9645 vs AMD EPYC Embedded 9655P: Comparison
EPYC 9645 vs EPYC Embedded 9655P: the boost clock difference
They are built to different briefs, and boost clock shows it, EPYC 9645 4.0 GHz against EPYC Embedded 9655P 4.5 GHz. They differ on tdp too, 370 W on the EPYC 9645 versus 400 W on the EPYC Embedded 9655P. Core architecture is not the same on both, Zen 5c "Turin Dense" on the EPYC 9645 versus Zen 5 on the EPYC Embedded 9655P. There is a split on base clock as well, 2.3 GHz on the EPYC 9645 versus 2.6 GHz on the EPYC Embedded 9655P. They differ on multi-socket support too, 1P/2P on the EPYC 9645 versus Single Socket Only on the EPYC Embedded 9655P.
Which should you buy, EPYC 9645 or EPYC Embedded 9655P?
The EPYC 9645 suits cloud tenancy and container hosting and dense virtualization at moderate power, though it is the wrong buy for single-thread-sensitive workloads and maximum absolute core count needs. The EPYC Embedded 9655P is the one to take for 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. Our rating of the EPYC 9645 (8.7/10): the EPYC 9645 is a solid mid-tier dense-core option for cloud hosts that want more cores per socket without jumping to AMD's largest dense SKUs.
What EPYC 9645 and EPYC Embedded 9655P have in common
Where they agree, they agree completely, l3 cache, memory channels, core count, thread count and socket included, so the decision does not turn on any of those. They match on 1 further specification as well.
Frequently asked questions
Is the ECC Support the same on the EPYC 9645 and EPYC Embedded 9655P?
It is. Both are listed at Yes, so it is not a reason to pick one over the other.
Specs and benchmarks
Core Count
- AMD EPYC 9645
- 96 cores
- AMD EPYC Embedded 9655P
- 96 cores
Thread Count
- AMD EPYC 9645
- 192 threads
- AMD EPYC Embedded 9655P
- 192 threads
Core Architecture
- AMD EPYC 9645
- Zen 5c "Turin Dense"
- AMD EPYC Embedded 9655P
- Zen 5
Base Clock
- AMD EPYC 9645
- 2.3 GHz
- AMD EPYC Embedded 9655P
- 2.6 GHz
Boost Clock
- AMD EPYC 9645
- 4.0 GHz
- AMD EPYC Embedded 9655P
- 4.5 GHz
L3 Cache
- AMD EPYC 9645
- 384 MB
- AMD EPYC Embedded 9655P
- 384 MB
Socket
- AMD EPYC 9645
- SP5
- AMD EPYC Embedded 9655P
- SP5
Multi-Socket Support
- AMD EPYC 9645
- 1P/2P
- AMD EPYC Embedded 9655P
- Single Socket Only
Memory Channels
- AMD EPYC 9645
- 12 channels
- AMD EPYC Embedded 9655P
- 12 channels
ECC Support
- AMD EPYC 9645
- Yes
- AMD EPYC Embedded 9655P
- Yes
TDP
- AMD EPYC 9645
- 370 W
- AMD EPYC Embedded 9655P
- 400 W
Which one should you pick?
Choose 9645 if you want the higher L3 cache (384 MB vs 384 MB) and the higher memory channels (12 channels vs 12 channels).
Choose 9655P if you already have it on hand or find it at a lower price.
Verdict
AMD EPYC 9645
8.7 / 10 Expert Rating
The EPYC 9645 is a solid mid-tier dense-core option for cloud hosts that want more cores per socket without jumping to AMD's largest dense SKUs.