EPYC 9555
EPYC 9555P
EPYC 9555 vs EPYC 9555P 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 9555 vs EPYC 9555P 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 9555 vs EPYC 9555P: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 9555
2024Why buy it
Trade-offs
- ❌Lower PassMark (133,253 vs 135,441).
- ❌Lower PassMark per dollar, at 13.6 vs 17.0 PassMark/$ ($9,826 MSRP vs $7,983 MSRP).
EPYC 9555P
2024Why buy it
- ✅+1.6% higher PassMark.
- ✅Costs $1,843 less on MSRP ($7,983 MSRP vs $9,826 MSRP).
- ✅Delivers 25.1% more PassMark for each dollar spent, at 17.0 vs 13.6 PassMark/$ ($7,983 MSRP vs $9,826 MSRP).
Trade-offs
- ❌Fewer obvious downsides in this matchup outside of normal market pricing swings.
Quick Answers
So, is EPYC 9555P better than EPYC 9555?
Which one is better for gaming?
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 9555 vs EPYC 9555P Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 9555
The EPYC 9555 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: 133,253 points. Launch price was $9,826.
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.
Processing Power
Both the EPYC 9555 and EPYC 9555P share an identical 64-core/128-thread configuration. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 4.4 GHz on the EPYC 9555P — identical boost frequencies (base: 3.2 GHz vs 3.2 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9555 scores 133,253 against the EPYC 9555P's 135,441 — a 1.6% lead for the EPYC 9555P. Both processors carry 256 MB (total) of L3 cache.
| Feature | EPYC 9555 | EPYC 9555P |
|---|---|---|
| Cores / Threads | 64 / 128 | 64 / 128 |
| Boost Clock | 4.4 GHz | 4.4 GHz |
| Base Clock | 3.2 GHz | 3.2 GHz |
| L3 Cache | 256 MB (total) | 256 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Turin (2024) | Turin (2024) |
| PassMark | 133,253 | 135,441+2% |
| Geekbench 6 Single | — | 2,815 |
| Geekbench 6 Multi | — | 29,406 |
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 9555) and SP5 (EPYC 9555P).
| Feature | EPYC 9555 | EPYC 9555P |
|---|---|---|
| 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 9555 targets Data Center, EPYC 9555P targets Data Center / Single Socket. Direct competitor: EPYC 9555 rivals Xeon 6972P; EPYC 9555P rivals Xeon 6979P.
| Feature | EPYC 9555 | EPYC 9555P |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center | Data Center / Single Socket |
Value Analysis
At launch, the EPYC 9555 was priced at $9826, while the EPYC 9555P came in at $7983. On launch pricing ($9826 vs $7983), EPYC 9555P was $1843 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 17.0 pts/$ for the EPYC 9555P — making the EPYC 9555P the 22.3% better value option.
| Feature | EPYC 9555 | EPYC 9555P |
|---|---|---|
| MSRP | $9826 | $7983-19% |
| Performance per Dollar | 13.6 | 17.0+25% |
| Release Date | 2024 | 2024 |
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