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AMD EPYC 9645 vs AMD EPYC Embedded 9455: Comparison
EPYC 9645 vs EPYC Embedded 9455 l3 cache compared
L3 cache is where these two genuinely part company, EPYC 9645 384 MB against EPYC Embedded 9455 256 MB, a 33% lead for EPYC 9645. There is a split on boost clock as well, 4.0 GHz on the EPYC 9645 versus 4.4 GHz on the EPYC Embedded 9455. There is a split on tdp as well, 370 W on the EPYC 9645 versus 300 W on the EPYC Embedded 9455. They differ on core count too, 96 cores on the EPYC 9645 versus 48 cores on the EPYC Embedded 9455. There is a split on thread count as well, 192 threads on the EPYC 9645 versus 96 threads on the EPYC Embedded 9455. They differ on core architecture too, Zen 5c "Turin Dense" on the EPYC 9645 versus Zen 5 on the EPYC Embedded 9455. They differ on base clock too, 2.3 GHz on the EPYC 9645 versus 3.15 GHz on the EPYC Embedded 9455.
Who each one is for
The EPYC 9645 is the one to take for cloud tenancy and container hosting and dense virtualization at moderate power, though it is not built for single-thread-sensitive workloads and maximum absolute core count needs. Buy the EPYC Embedded 9455 for industrial and embedded system designs and long-lifecycle networking and edge-compute deployments, though it is the wrong buy 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 9455 have in common
Everything else lines up. Socket and multi-socket support read the same on both, so those are not worth weighing.
Specs and benchmarks
Core Count
- AMD EPYC 9645
- 96 cores
- AMD EPYC Embedded 9455
- 48 cores
Thread Count
- AMD EPYC 9645
- 192 threads
- AMD EPYC Embedded 9455
- 96 threads
Core Architecture
- AMD EPYC 9645
- Zen 5c "Turin Dense"
- AMD EPYC Embedded 9455
- Zen 5
Base Clock
- AMD EPYC 9645
- 2.3 GHz
- AMD EPYC Embedded 9455
- 3.15 GHz
Boost Clock
- AMD EPYC 9645
- 4.0 GHz
- AMD EPYC Embedded 9455
- 4.4 GHz
L3 Cache
- AMD EPYC 9645
- 384 MBBest
- AMD EPYC Embedded 9455
- 256 MB-33%
Socket
- AMD EPYC 9645
- SP5
- AMD EPYC Embedded 9455
- SP5
Multi-Socket Support
- AMD EPYC 9645
- 1P/2P
- AMD EPYC Embedded 9455
- 1P/2P
TDP
- AMD EPYC 9645
- 370 W
- AMD EPYC Embedded 9455
- 300 W
Which one should you pick?
Choose 9645 if you want the higher L3 cache (384 MB vs 256 MB).
Choose 9455 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.