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AMD EPYC 9456 vs AMD EPYC 9746: Comparison
EPYC 9456 vs EPYC 9746: the l3 cache difference
Start with l3 cache, because it is the widest measured gap between them: EPYC 9456 256 MB against EPYC 9746 512 MB, 50% in favour of EPYC 9746. Boost clock is not the same on both, 3.7 GHz on the EPYC 9456 versus 4 GHz on the EPYC 9746. There is a split on tdp as well, 265 W on the EPYC 9456 versus 400 W on the EPYC 9746. They differ on configurable tdp max too, 300 W on the EPYC 9456 versus 400 W on the EPYC 9746. There is a split on core count as well, 48 cores on the EPYC 9456 versus 128 cores on the EPYC 9746. They differ on thread count too, 96 threads on the EPYC 9456 versus 256 threads on the EPYC 9746. Base clock is not the same on both, 3.2 GHz on the EPYC 9456 versus 2.9 GHz on the EPYC 9746.
EPYC 9456 vs EPYC 9746: which one fits your build
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 9746 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 9746 have in common
The common ground is wider than the gap: memory channels, pcie lanes, cpu socket, product family and segment are identical here. They match on 10 further specifications as well.
Frequently asked questions
Is the SMT Support the same on the EPYC 9456 and EPYC 9746?
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 9746
- AMD
Model Number
- AMD EPYC 9456
- 9456
- AMD EPYC 9746
- 9746
CPU Socket
- AMD EPYC 9456
- SP8
- AMD EPYC 9746
- SP8
Product Family
- AMD EPYC 9456
- EPYC 9006 Series
- AMD EPYC 9746
- EPYC 9006 Series
Segment
- AMD EPYC 9456
- Data Center
- AMD EPYC 9746
- Data Center
Core Count
- AMD EPYC 9456
- 48 cores
- AMD EPYC 9746
- 128 cores
Thread Count
- AMD EPYC 9456
- 96 threads
- AMD EPYC 9746
- 256 threads
SMT Support
- AMD EPYC 9456
- Yes
- AMD EPYC 9746
- Yes
Base Clock
- AMD EPYC 9456
- 3.2 GHz
- AMD EPYC 9746
- 2.9 GHz
Boost Clock
- AMD EPYC 9456
- 3.7 GHz
- AMD EPYC 9746
- 4 GHz
L3 Cache
- AMD EPYC 9456
- 256 MB-50%
- AMD EPYC 9746
- 512 MBBest
Socket
- AMD EPYC 9456
- SP8
- AMD EPYC 9746
- SP8
Multi-Socket Support
- AMD EPYC 9456
- Dual Socket
- AMD EPYC 9746
- Dual Socket
Memory Channels
- AMD EPYC 9456
- 8 channels
- AMD EPYC 9746
- 8 channels
Memory Type
- AMD EPYC 9456
- DDR5 RDIMM
- AMD EPYC 9746
- DDR5 RDIMM
Max Memory Speed
- AMD EPYC 9456
- 8000 MT/s
- AMD EPYC 9746
- 8000 MT/s
Registered Memory Required
- AMD EPYC 9456
- Yes
- AMD EPYC 9746
- Yes
PCIe Lanes
- AMD EPYC 9456
- 128 lanes
- AMD EPYC 9746
- 128 lanes
PCIe Generation
- AMD EPYC 9456
- PCIe 6.0
- AMD EPYC 9746
- PCIe 6.0
TDP
- AMD EPYC 9456
- 265 W
- AMD EPYC 9746
- 400 W
Configurable TDP Max
- AMD EPYC 9456
- 300 W
- AMD EPYC 9746
- 400 W
Memory Bandwidth
- AMD EPYC 9456
- 512 GB/s / 819.2 GB/s
- AMD EPYC 9746
- 512 GB/s / 819.2 GB/s
PCIe
- AMD EPYC 9456
- PCIe 6.0 x128
- AMD EPYC 9746
- 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 9746
- 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 9746 if you want the higher L3 cache (512 MB vs 256 MB).