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AMD EPYC 9655P vs AMD EPYC 9755: Comparison
What is the difference between EPYC 9655P and EPYC 9755?
Boost clock is the dividing line, EPYC 9655P Up to 4.5 GHz against EPYC 9755 4.5 GHz. The benchmark result agrees. SPECrate® 2017 Integer (base), 1-chip puts EPYC 9755 26% ahead, 1,410 against 1,040. There is a split on tdp as well, 400 W on the EPYC 9655P versus 500 W on the EPYC 9755. Core count is not the same on both, 96 cores on the EPYC 9655P versus 128 cores on the EPYC 9755. They differ on thread count too, 192 threads on the EPYC 9655P versus 256 threads on the EPYC 9755. There is a split on base clock as well, 2.6 GHz on the EPYC 9655P versus 2.7 GHz on the EPYC 9755. Multi-socket support is not the same on both, 1P on the EPYC 9655P versus Dual Socket on the EPYC 9755. On memory support there is little in it, DDR5, 12-Channel, Up to 6400 MT/s on the EPYC 9655P versus 12-channel ECC DDR5 on the EPYC 9755.
Who each one is for
The EPYC 9655P 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 9755 for large-scale enterprise databases and HPC and technical computing at scale, though it is the wrong buy for power-constrained deployments and small server rooms. Our rating of the EPYC 9755 (9.4/10): the EPYC 9755 is AMD's most powerful standard-core EPYC SKU, pairing 128 cores with clocks that make few compromises for organizations that can afford the 500W power budget.
Where the two are identical
The common ground is wider than the gap: l3 cache, memory channels, pcie lanes, release year and socket are identical here. They match on 2 further specifications as well.
Frequently asked questions
Is the Max Memory Speed the same on the EPYC 9655P and EPYC 9755?
It is. Both are listed at 6400 MT/s, so it is not a reason to pick one over the other.
Specs and benchmarks
Release Year
- AMD EPYC 9655P
- 2024
- AMD EPYC 9755
- 2024
Core Count
- AMD EPYC 9655P
- 96 cores
- AMD EPYC 9755
- 128 cores
Thread Count
- AMD EPYC 9655P
- 192 threads
- AMD EPYC 9755
- 256 threads
Base Clock
- AMD EPYC 9655P
- 2.6 GHz
- AMD EPYC 9755
- 2.7 GHz
Boost Clock
- AMD EPYC 9655P
- Up to 4.5 GHz
- AMD EPYC 9755
- 4.5 GHz
L3 Cache
- AMD EPYC 9655P
- 384 MB
- AMD EPYC 9755
- 384 MB
Socket
- AMD EPYC 9655P
- SP5
- AMD EPYC 9755
- SP5
Multi-Socket Support
- AMD EPYC 9655P
- 1P
- AMD EPYC 9755
- Dual Socket
Memory Channels
- AMD EPYC 9655P
- 12 channels
- AMD EPYC 9755
- 12 channels
Max Memory Speed
- AMD EPYC 9655P
- 6400 MT/s
- AMD EPYC 9755
- 6400 MT/s
PCIe Lanes
- AMD EPYC 9655P
- 128 lanes
- AMD EPYC 9755
- 128 lanes
PCIe Generation
- AMD EPYC 9655P
- PCIe 5.0
- AMD EPYC 9755
- PCIe 5.0
TDP
- AMD EPYC 9655P
- 400 W
- AMD EPYC 9755
- 500 W
Memory Support
- AMD EPYC 9655P
- DDR5, 12-Channel, Up to 6400 MT/s
- AMD EPYC 9755
- 12-channel ECC DDR5Best
Benchmarks
- General CPU
SPECrate® 2017 Integer (base), 1-chip
- AMD EPYC 9655P
- 1,040-26%
- AMD EPYC 9755
- 1,410Best
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 9655P
- 984-19%
- AMD EPYC 9755
- 1,220Best
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 9655P if you want the higher L3 cache (384 MB vs 384 MB), the higher memory channels (12 channels vs 12 channels) and the higher PCIe lanes (128 lanes vs 128 lanes).
Choose 9755 if you want the higher SPECrate® 2017 integer (base), 1-chip (1,410 vs 1,040) and the higher SPECrate® 2017 floating point (base), 1-chip (1,220 vs 984).
Verdict
AMD EPYC 9755
9.4 / 10 Expert Rating
The EPYC 9755 is AMD's most powerful standard-core EPYC SKU, pairing 128 cores with clocks that make few compromises for organizations that can afford the 500W power budget.