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AMD EPYC 9745 vs AMD EPYC Embedded 9845: Comparison
EPYC 9745 vs EPYC Embedded 9845: the l3 cache difference
Start with l3 cache, because it is the widest measured gap between them: EPYC 9745 384 MB against EPYC Embedded 9845 320 MB, 17% in favour of EPYC 9745. There is a split on boost clock as well, 4.0 GHz on the EPYC 9745 versus 3.7 GHz on the EPYC Embedded 9845. They differ on tdp too, 400 W on the EPYC 9745 versus 390 W on the EPYC Embedded 9845. Core count is not the same on both, 128 cores on the EPYC 9745 versus 160 cores on the EPYC Embedded 9845. There is a split on thread count as well, 256 threads on the EPYC 9745 versus 320 threads on the EPYC Embedded 9845. They differ on core architecture too, Zen 5c "Turin Dense" on the EPYC 9745 versus Zen 5c on the EPYC Embedded 9845. Base clock is not the same on both, 2.4 GHz on the EPYC 9745 versus 2.1 GHz on the EPYC Embedded 9845. There is a split on multi-socket support as well, 1P/2P on the EPYC 9745 versus Dual Socket on the EPYC Embedded 9845.
Which should you buy, EPYC 9745 or EPYC Embedded 9845?
The EPYC 9745 is the one to take for hyperscale cloud and VM hosting and container-dense Kubernetes nodes, though it is not the pick for small server deployments and per-core licensed software. Buy the EPYC Embedded 9845 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. Our rating of the EPYC 9745 (9.1/10): the EPYC 9745 delivers 128-core density at a more power-conscious 400W, making it the efficiency-minded pick for hyperscale deployments.
What EPYC 9745 and EPYC Embedded 9845 have in common
The common ground is wider than the gap: memory channels, socket and ecc support are identical here.
Specs and benchmarks
Core Count
- AMD EPYC 9745
- 128 cores
- AMD EPYC Embedded 9845
- 160 cores
Thread Count
- AMD EPYC 9745
- 256 threads
- AMD EPYC Embedded 9845
- 320 threads
Core Architecture
- AMD EPYC 9745
- Zen 5c "Turin Dense"
- AMD EPYC Embedded 9845
- Zen 5c
Base Clock
- AMD EPYC 9745
- 2.4 GHz
- AMD EPYC Embedded 9845
- 2.1 GHz
Boost Clock
- AMD EPYC 9745
- 4.0 GHz
- AMD EPYC Embedded 9845
- 3.7 GHz
L3 Cache
- AMD EPYC 9745
- 384 MBBest
- AMD EPYC Embedded 9845
- 320 MB-17%
Socket
- AMD EPYC 9745
- SP5
- AMD EPYC Embedded 9845
- SP5
Multi-Socket Support
- AMD EPYC 9745
- 1P/2P
- AMD EPYC Embedded 9845
- Dual Socket
Memory Channels
- AMD EPYC 9745
- 12 channels
- AMD EPYC Embedded 9845
- 12 channels
ECC Support
- AMD EPYC 9745
- Yes
- AMD EPYC Embedded 9845
- Yes
TDP
- AMD EPYC 9745
- 400 W
- AMD EPYC Embedded 9845
- 390 W
Which one should you pick?
Choose 9745 if you want the higher L3 cache (384 MB vs 320 MB) and the higher memory channels (12 channels vs 12 channels).
Choose 9845 if you already have it on hand or find it at a lower price.
Verdict
AMD EPYC 9745
9.1 / 10 Expert Rating
The EPYC 9745 delivers 128-core density at a more power-conscious 400W, making it the efficiency-minded pick for hyperscale deployments.