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AMD EPYC 9846 vs AMD EPYC 9966: Comparison
EPYC 9846 vs EPYC 9966 boost clock compared
They are built to different briefs, and boost clock shows it, EPYC 9846 3.7 GHz against EPYC 9966 4 GHz. They differ on tdp too, 500 W on the EPYC 9846 versus 600 W on the EPYC 9966. There is a split on configurable tdp max as well, 500 W on the EPYC 9846 versus 600 W on the EPYC 9966. Core count is not the same on both, 168 cores on the EPYC 9846 versus 192 cores on the EPYC 9966. They differ on thread count too, 336 threads on the EPYC 9846 versus 384 threads on the EPYC 9966. There is a split on base clock as well, 2.85 GHz on the EPYC 9846 versus 2.9 GHz on the EPYC 9966. Launch price is not the same on both, $13,114 on the EPYC 9846 versus $14,079 on the EPYC 9966.
EPYC 9846 vs EPYC 9966: which one fits your build
The EPYC 9846 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 9966 for datacenter and cloud compute and virtualization-dense server workloads, though it is not built for consumer desktop builds and single-threaded latency-sensitive workloads on lower core-count SKUs.
Where the two are identical
Everything else lines up. L3 cache, memory channels, pcie lanes, cpu socket and product family read the same on both, so those are not worth weighing. They match on 11 further specifications as well.
Frequently asked questions
Is the Segment the same on the EPYC 9846 and EPYC 9966?
It is. Both are listed at Data Center, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- AMD EPYC 9846
- AMD
- AMD EPYC 9966
- AMD
Model Number
- AMD EPYC 9846
- 9846
- AMD EPYC 9966
- 9966
CPU Socket
- AMD EPYC 9846
- SP7
- AMD EPYC 9966
- SP7
Product Family
- AMD EPYC 9846
- EPYC 9006 Series
- AMD EPYC 9966
- EPYC 9006 Series
Segment
- AMD EPYC 9846
- Data Center
- AMD EPYC 9966
- Data Center
Core Count
- AMD EPYC 9846
- 168 cores
- AMD EPYC 9966
- 192 cores
Thread Count
- AMD EPYC 9846
- 336 threads
- AMD EPYC 9966
- 384 threads
SMT Support
- AMD EPYC 9846
- Yes
- AMD EPYC 9966
- Yes
Base Clock
- AMD EPYC 9846
- 2.85 GHz
- AMD EPYC 9966
- 2.9 GHz
Boost Clock
- AMD EPYC 9846
- 3.7 GHz
- AMD EPYC 9966
- 4 GHz
L3 Cache
- AMD EPYC 9846
- 768 MB
- AMD EPYC 9966
- 768 MB
Socket
- AMD EPYC 9846
- SP7
- AMD EPYC 9966
- SP7
Multi-Socket Support
- AMD EPYC 9846
- Dual Socket
- AMD EPYC 9966
- Dual Socket
Memory Channels
- AMD EPYC 9846
- 16 channels
- AMD EPYC 9966
- 16 channels
Memory Type
- AMD EPYC 9846
- DDR5 RDIMM
- AMD EPYC 9966
- DDR5 RDIMM
Max Memory Speed
- AMD EPYC 9846
- 8000 MT/s
- AMD EPYC 9966
- 8000 MT/s
Registered Memory Required
- AMD EPYC 9846
- Yes
- AMD EPYC 9966
- Yes
PCIe Lanes
- AMD EPYC 9846
- 96 lanes
- AMD EPYC 9966
- 96 lanes
PCIe Generation
- AMD EPYC 9846
- PCIe 6.0
- AMD EPYC 9966
- PCIe 6.0
TDP
- AMD EPYC 9846
- 500 W
- AMD EPYC 9966
- 600 W
Configurable TDP Max
- AMD EPYC 9846
- 500 W
- AMD EPYC 9966
- 600 W
Launch Price
- AMD EPYC 9846
- $13,114
- AMD EPYC 9966
- $14,079
Memory Bandwidth
- AMD EPYC 9846
- 1024 GB/s / 1638 GB/s
- AMD EPYC 9966
- 1024 GB/s / 1638 GB/s
PCIe
- AMD EPYC 9846
- PCIe 6.0 x96
- AMD EPYC 9966
- PCIe 6.0 x96
Memory Support
- AMD EPYC 9846
- DDR5 RDIMM | MRDIMM, 16-Channel, Up to 8000 MT/s / Up to 12800 MT/s
- AMD EPYC 9966
- DDR5 RDIMM | MRDIMM, 16-Channel, Up to 8000 MT/s / Up to 12800 MT/s
Which one should you pick?
Choose 9846 if you want the higher L3 cache (768 MB vs 768 MB), the higher memory channels (16 channels vs 16 channels) and the higher PCIe lanes (96 lanes vs 96 lanes).
Choose 9966 if you already have it on hand or find it at a lower price.