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AMD EPYC 4584PX vs AMD EPYC 4585PX: Comparison
EPYC 4584PX vs EPYC 4585PX: the tdp difference
Tdp is the dividing line, EPYC 4584PX 120 W against EPYC 4585PX 170 W. SPECrate® 2017 Integer (base), 1-chip backs the spec sheet up. EPYC 4585PX scores 213 to 180, 15% clear. There is a split on base clock as well, 4.2 GHz on the EPYC 4584PX versus 4.3 GHz on the EPYC 4585PX. Max memory speed is closer, 5200 MT/s on the EPYC 4584PX versus 5600 MT/s on the EPYC 4585PX. Pcie is not the same on both, PCIe 5.0 x28 on the EPYC 4584PX versus PCIe 5.0 x28, 28 from CPU. Up to 44... on the EPYC 4585PX. There is a split on memory support as well, DDR5, 2-Channel, Up to 5200 MT/s on the EPYC 4584PX versus DDR5, 2-Channel, Up to 5600 MT/s on the EPYC 4585PX.
EPYC 4584PX vs EPYC 4585PX: which one fits your build
The EPYC 4584PX 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. Buy the EPYC 4585PX 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.
Where the two are identical
The common ground is wider than the gap: boost clock, l3 cache, memory channels, pcie lanes and core count are identical here. They match on 4 further specifications as well.
Frequently asked questions
Is the Thread Count the same on the EPYC 4584PX and EPYC 4585PX?
It is. Both are listed at 32 threads, so it is not a reason to pick one over the other.
Specs and benchmarks
Core Count
- AMD EPYC 4584PX
- 16 cores
- AMD EPYC 4585PX
- 16 cores
Thread Count
- AMD EPYC 4584PX
- 32 threads
- AMD EPYC 4585PX
- 32 threads
Base Clock
- AMD EPYC 4584PX
- 4.2 GHz
- AMD EPYC 4585PX
- 4.3 GHz
Boost Clock
- AMD EPYC 4584PX
- Up to 5.7 GHz
- AMD EPYC 4585PX
- Up to 5.7 GHz
L3 Cache
- AMD EPYC 4584PX
- 128 MB
- AMD EPYC 4585PX
- 128 MB
Socket
- AMD EPYC 4584PX
- AM5
- AMD EPYC 4585PX
- AM5
Multi-Socket Support
- AMD EPYC 4584PX
- 1P
- AMD EPYC 4585PX
- 1P
Memory Channels
- AMD EPYC 4584PX
- 2 channels
- AMD EPYC 4585PX
- 2 channels
Max Memory Speed
- AMD EPYC 4584PX
- 5200 MT/s
- AMD EPYC 4585PX
- 5600 MT/sBest
PCIe Lanes
- AMD EPYC 4584PX
- 28 lanes
- AMD EPYC 4585PX
- 28 lanes
PCIe Generation
- AMD EPYC 4584PX
- PCIe 5.0
- AMD EPYC 4585PX
- PCIe 5.0
TDP
- AMD EPYC 4584PX
- 120 W
- AMD EPYC 4585PX
- 170 W
PCIe
- AMD EPYC 4584PX
- PCIe 5.0 x28
- AMD EPYC 4585PX
- PCIe 5.0 x28, 28 from CPU. Up to 44 with Chipset lanes
Memory Support
- AMD EPYC 4584PX
- DDR5, 2-Channel, Up to 5200 MT/s
- AMD EPYC 4585PX
- DDR5, 2-Channel, Up to 5600 MT/s
Benchmarks
- General CPU
SPECrate® 2017 Integer (base), 1-chip
- AMD EPYC 4584PX
- 180-15%
- AMD EPYC 4585PX
- 213Best
Best published 1-chip result on spec.org, retrieved 23 Sept 2026.
Server-style tasks like compiling and compression on every thread. Best for judging workstation and server work.
SPECrate® 2017 Floating Point (base), 1-chip
- AMD EPYC 4584PX
- 135-22%
- AMD EPYC 4585PX
- 174Best
Best published 1-chip result on spec.org, retrieved 23 Sept 2026.
Scientific and engineering tasks on every thread. Rewards core count and memory bandwidth.
SPEC®, SPECrate® and SPECspeed® are registered trademarks of the Standard Performance Evaluation Corporation. Copied by permission of the Standard Performance Evaluation Corporation (SPEC). Results retrieved from www.spec.org on 23 Sept 2026.
Which one should you pick?
Choose 4584PX if you want the higher L3 cache (128 MB vs 128 MB), the higher memory channels (2 channels vs 2 channels) and the higher PCIe lanes (28 lanes vs 28 lanes).
Choose 4585PX if you want the higher SPECrate® 2017 integer (base), 1-chip (213 vs 180) and the higher SPECrate® 2017 floating point (base), 1-chip (174 vs 135).
Price comparison
| Retailer | AMD EPYC 4584PX | AMD EPYC 4585PX |
|---|---|---|
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.