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AMD EPYC 9556 vs AMD EPYC 9756: Comparison
EPYC 9556 vs EPYC 9756 l3 cache compared
Start with l3 cache, because it is the widest measured gap between them: EPYC 9556 384 MB against EPYC 9756 512 MB, 25% in favour of EPYC 9756. Boost clock is not the same on both, 4.3 GHz on the EPYC 9556 versus 4 GHz on the EPYC 9756. There is a split on tdp as well, 300 W on the EPYC 9556 versus 500 W on the EPYC 9756. They differ on configurable tdp max too, 300 W on the EPYC 9556 versus 500 W on the EPYC 9756. There is a split on core count as well, 64 cores on the EPYC 9556 versus 128 cores on the EPYC 9756. They differ on thread count too, 128 threads on the EPYC 9556 versus 256 threads on the EPYC 9756. Base clock is not the same on both, 2.75 GHz on the EPYC 9556 versus 3.15 GHz on the EPYC 9756. There is a split on launch price as well, $8,008 on the EPYC 9556 versus $12,498 on the EPYC 9756.
Which should you buy, EPYC 9556 or EPYC 9756?
The EPYC 9556 suits 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. Buy the EPYC 9756 for 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 9556 and EPYC 9756 have in common
Everything else lines up. Memory channels, pcie lanes, cpu socket, product family and segment read the same on both, so those are not worth weighing. They match on 10 further specifications as well.
Frequently asked questions
Is the SMT Support the same on the EPYC 9556 and EPYC 9756?
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 9556
- AMD
- AMD EPYC 9756
- AMD
Model Number
- AMD EPYC 9556
- 9556
- AMD EPYC 9756
- 9756
CPU Socket
- AMD EPYC 9556
- SP7
- AMD EPYC 9756
- SP7
Product Family
- AMD EPYC 9556
- EPYC 9006 Series
- AMD EPYC 9756
- EPYC 9006 Series
Segment
- AMD EPYC 9556
- Data Center
- AMD EPYC 9756
- Data Center
Core Count
- AMD EPYC 9556
- 64 cores
- AMD EPYC 9756
- 128 cores
Thread Count
- AMD EPYC 9556
- 128 threads
- AMD EPYC 9756
- 256 threads
SMT Support
- AMD EPYC 9556
- Yes
- AMD EPYC 9756
- Yes
Base Clock
- AMD EPYC 9556
- 2.75 GHz
- AMD EPYC 9756
- 3.15 GHz
Boost Clock
- AMD EPYC 9556
- 4.3 GHz
- AMD EPYC 9756
- 4 GHz
L3 Cache
- AMD EPYC 9556
- 384 MB-25%
- AMD EPYC 9756
- 512 MBBest
Socket
- AMD EPYC 9556
- SP7
- AMD EPYC 9756
- SP7
Multi-Socket Support
- AMD EPYC 9556
- Dual Socket
- AMD EPYC 9756
- Dual Socket
Memory Channels
- AMD EPYC 9556
- 16 channels
- AMD EPYC 9756
- 16 channels
Memory Type
- AMD EPYC 9556
- DDR5 RDIMM
- AMD EPYC 9756
- DDR5 RDIMM
Max Memory Speed
- AMD EPYC 9556
- 8000 MT/s
- AMD EPYC 9756
- 8000 MT/s
Registered Memory Required
- AMD EPYC 9556
- Yes
- AMD EPYC 9756
- Yes
PCIe Lanes
- AMD EPYC 9556
- 96 lanes
- AMD EPYC 9756
- 96 lanes
PCIe Generation
- AMD EPYC 9556
- PCIe 6.0
- AMD EPYC 9756
- PCIe 6.0
TDP
- AMD EPYC 9556
- 300 W
- AMD EPYC 9756
- 500 W
Configurable TDP Max
- AMD EPYC 9556
- 300 W
- AMD EPYC 9756
- 500 W
Launch Price
- AMD EPYC 9556
- $8,008
- AMD EPYC 9756
- $12,498
Memory Bandwidth
- AMD EPYC 9556
- 1024 GB/s / 1638 GB/s
- AMD EPYC 9756
- 1024 GB/s / 1638 GB/s
PCIe
- AMD EPYC 9556
- PCIe 6.0 x96
- AMD EPYC 9756
- PCIe 6.0 x96
Memory Support
- AMD EPYC 9556
- DDR5 RDIMM | MRDIMM, 16-Channel, Up to 8000 MT/s / Up to 12800 MT/s
- AMD EPYC 9756
- DDR5 RDIMM | MRDIMM, 16-Channel, Up to 8000 MT/s / Up to 12800 MT/s
Which one should you pick?
Choose 9556 if you want the higher memory channels (16 channels vs 16 channels) and the higher PCIe lanes (96 lanes vs 96 lanes).
Choose 9756 if you want the higher L3 cache (512 MB vs 384 MB).