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AMD EPYC 9456 vs AMD EPYC 9676F: Comparison
EPYC 9456 vs EPYC 9676F: the l3 cache difference
L3 cache is where these two genuinely part company, EPYC 9456 256 MB against EPYC 9676F 384 MB, a 33% lead for EPYC 9676F. They differ on boost clock too, 3.7 GHz on the EPYC 9456 versus 5 GHz on the EPYC 9676F. They differ on tdp too, 265 W on the EPYC 9456 versus 400 W on the EPYC 9676F. Configurable tdp max is not the same on both, 300 W on the EPYC 9456 versus 400 W on the EPYC 9676F. Core count is not the same on both, 48 cores on the EPYC 9456 versus 96 cores on the EPYC 9676F. There is a split on thread count as well, 96 threads on the EPYC 9456 versus 192 threads on the EPYC 9676F. There is a split on base clock as well, 3.2 GHz on the EPYC 9456 versus 3.1 GHz on the EPYC 9676F.
Who each one is for
Buy the EPYC 9456 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 9676F suits 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.
What EPYC 9456 and EPYC 9676F have in common
Where they agree, they agree completely, memory channels, pcie lanes, cpu socket, product family and segment included, so the decision does not turn on any of those. They match on 10 further specifications as well.
Frequently asked questions
Is the SMT Support the same on the EPYC 9456 and EPYC 9676F?
It is. Both are listed at Yes, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- AMD EPYC 9456
- AMD
- AMD EPYC 9676F
- AMD
Model Number
- AMD EPYC 9456
- 9456
- AMD EPYC 9676F
- 9676F
CPU Socket
- AMD EPYC 9456
- SP8
- AMD EPYC 9676F
- SP8
Product Family
- AMD EPYC 9456
- EPYC 9006 Series
- AMD EPYC 9676F
- EPYC 9006 Series
Segment
- AMD EPYC 9456
- Data Center
- AMD EPYC 9676F
- Data Center
Core Count
- AMD EPYC 9456
- 48 cores
- AMD EPYC 9676F
- 96 cores
Thread Count
- AMD EPYC 9456
- 96 threads
- AMD EPYC 9676F
- 192 threads
SMT Support
- AMD EPYC 9456
- Yes
- AMD EPYC 9676F
- Yes
Base Clock
- AMD EPYC 9456
- 3.2 GHz
- AMD EPYC 9676F
- 3.1 GHz
Boost Clock
- AMD EPYC 9456
- 3.7 GHz
- AMD EPYC 9676F
- 5 GHz
L3 Cache
- AMD EPYC 9456
- 256 MB-33%
- AMD EPYC 9676F
- 384 MBBest
Socket
- AMD EPYC 9456
- SP8
- AMD EPYC 9676F
- SP8
Multi-Socket Support
- AMD EPYC 9456
- Dual Socket
- AMD EPYC 9676F
- Dual Socket
Memory Channels
- AMD EPYC 9456
- 8 channels
- AMD EPYC 9676F
- 8 channels
Memory Type
- AMD EPYC 9456
- DDR5 RDIMM
- AMD EPYC 9676F
- DDR5 RDIMM
Max Memory Speed
- AMD EPYC 9456
- 8000 MT/s
- AMD EPYC 9676F
- 8000 MT/s
Registered Memory Required
- AMD EPYC 9456
- Yes
- AMD EPYC 9676F
- Yes
PCIe Lanes
- AMD EPYC 9456
- 128 lanes
- AMD EPYC 9676F
- 128 lanes
PCIe Generation
- AMD EPYC 9456
- PCIe 6.0
- AMD EPYC 9676F
- PCIe 6.0
TDP
- AMD EPYC 9456
- 265 W
- AMD EPYC 9676F
- 400 W
Configurable TDP Max
- AMD EPYC 9456
- 300 W
- AMD EPYC 9676F
- 400 W
Memory Bandwidth
- AMD EPYC 9456
- 512 GB/s / 819.2 GB/s
- AMD EPYC 9676F
- 512 GB/s / 819.2 GB/s
PCIe
- AMD EPYC 9456
- PCIe 6.0 x128
- AMD EPYC 9676F
- PCIe 6.0 x128
Memory Support
- AMD EPYC 9456
- DDR5 RDIMM | MRDIMM, 8-Channel, Up to 8000 MT/s / Up to 12800 MT/s
- AMD EPYC 9676F
- DDR5 RDIMM | MRDIMM, 8-Channel, Up to 8000 MT/s / Up to 12800 MT/s
Which one should you pick?
Choose 9456 if you want the higher memory channels (8 channels vs 8 channels) and the higher PCIe lanes (128 lanes vs 128 lanes).
Choose 9676F if you want the higher L3 cache (384 MB vs 256 MB).