EPYC 9555P
EPYC 9655P
EPYC 9555P vs EPYC 9655P Performance Spectrum
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
EPYC 9555P vs EPYC 9655P FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
EPYC 9555P vs EPYC 9655P: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 9555P
2024Why buy it
- ✅+21.1% higher Geekbench multi-core.
- ✅Costs $2,828 less on MSRP ($7,983 MSRP vs $10,811 MSRP).
- ✅Delivers 14.3% more PassMark for each dollar spent, at 17.0 vs 14.8 PassMark/$ ($7,983 MSRP vs $10,811 MSRP).
Trade-offs
- ❌Smaller total L3 cache (256 MB vs 384 MB).
EPYC 9655P
2024Why buy it
- ✅+50% larger total L3 cache (384 MB vs 256 MB).
Trade-offs
- ❌Lower Geekbench multi-core (24,287 vs 29,406).
- ❌Lower PassMark per dollar, at 14.8 vs 17.0 PassMark/$ ($10,811 MSRP vs $7,983 MSRP).
Quick Answers
So, is EPYC 9655P better than EPYC 9555P?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
EPYC 9555P vs EPYC 9655P Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 9555P
The EPYC 9555P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 64 cores and 128 threads. Base frequency is 3.2 GHz, with boost up to 4.4 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 360 Watt. Memory support: DDR5. Passmark benchmark score: 135,441 points. Launch price was $7,983.
EPYC 9655P
The EPYC 9655P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 96 cores and 192 threads. Base frequency is 2.6 GHz, with boost up to 4.5 GHz. L3 cache: 384 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 400 Watt. Memory support: DDR5. Passmark benchmark score: 160,490 points. Launch price was $10,811.
Processing Power
The EPYC 9555P packs 64 cores / 128 threads, while the EPYC 9655P offers 96 cores / 192 threads — the EPYC 9655P has 32 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555P versus 4.5 GHz on the EPYC 9655P — a 2.2% clock advantage for the EPYC 9655P (base: 3.2 GHz vs 2.6 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9555P scores 135,441 against the EPYC 9655P's 160,490 — a 16.9% lead for the EPYC 9655P. Multi-core Geekbench: 29,406 vs 24,287 (19.1% advantage for the EPYC 9555P). L3 cache: 256 MB (total) on the EPYC 9555P vs 384 MB (total) on the EPYC 9655P.
| Feature | EPYC 9555P | EPYC 9655P |
|---|---|---|
| Cores / Threads | 64 / 128 | 96 / 192+50% |
| Boost Clock | 4.4 GHz | 4.5 GHz+2% |
| Base Clock | 3.2 GHz+23% | 2.6 GHz |
| L3 Cache | 256 MB (total) | 384 MB (total)+50% |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Turin (2024) | Turin (2024) |
| PassMark | 135,441 | 160,490+18% |
| Geekbench 6 Single | 2,815 | — |
| Geekbench 6 Multi | 29,406+21% | 24,287 |
Memory & Platform
Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 memory speed. Both support up to 6 TB of RAM. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9555P) and SP5 (EPYC 9655P).
| Feature | EPYC 9555P | EPYC 9655P |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-6000 | DDR5-6000 |
| Max RAM Capacity | 6 TB | 6 TB |
| RAM Channels | 12 | 12 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128 | 128 |
Advanced Features
Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9555P targets Data Center / Single Socket, EPYC 9655P targets Data Center / Single Socket. Direct competitor: EPYC 9555P rivals Xeon 6979P; EPYC 9655P rivals Xeon 6979P.
| Feature | EPYC 9555P | EPYC 9655P |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center / Single Socket | Data Center / Single Socket |
Value Analysis
At launch, the EPYC 9555P was priced at $7983, while the EPYC 9655P came in at $10811. On launch pricing ($7983 vs $10811), EPYC 9555P was $2828 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555P delivers 17.0 pts/$ vs 14.8 pts/$ for the EPYC 9655P — making the EPYC 9555P the 13.3% better value option.
| Feature | EPYC 9555P | EPYC 9655P |
|---|---|---|
| MSRP | $7983-26% | $10811 |
| Performance per Dollar | 17.0+15% | 14.8 |
| Release Date | 2024 | 2024 |
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