EPYC 9555
EPYC 9655
EPYC 9555 vs EPYC 9655 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 9655 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 9655: 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
- ✅Costs $2,026 less on MSRP ($9,826 MSRP vs $11,852 MSRP).
Trade-offs
- ❌Lower PassMark (133,253 vs 156,110).
- ❌Smaller total L3 cache (256 MB vs 384 MB).
- ❌No AVX-512 support for niche heavy compute workloads where it can matter.
EPYC 9655
2024Why buy it
- ✅+50% larger total L3 cache (384 MB vs 256 MB).
- ✅AVX-512 support for select workstation, AI, and scientific workloads.
Trade-offs
- ❌20.6% HIGHER MSRP$11,852 MSRPvs$9,826 MSRP
Quick Answers
So, is EPYC 9655 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 9655 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 9655
The EPYC 9655 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: 156,110 points. Launch price was $11,852.
Processing Power
The EPYC 9555 packs 64 cores / 128 threads, while the EPYC 9655 offers 96 cores / 192 threads — the EPYC 9655 has 32 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 4.5 GHz on the EPYC 9655 — a 2.2% clock advantage for the EPYC 9655 (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 9555 scores 133,253 against the EPYC 9655's 156,110 — a 15.8% lead for the EPYC 9655. L3 cache: 256 MB (total) on the EPYC 9555 vs 384 MB (total) on the EPYC 9655.
| Feature | EPYC 9555 | EPYC 9655 |
|---|---|---|
| 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 | 133,253 | 156,110+17% |
| Geekbench 6 Single | — | 2,830 |
| Geekbench 6 Multi | — | 29,329 |
Memory & Platform
Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 memory speed. The EPYC 9655 supports up to 9 TB of RAM compared to 6 TB — 50% more capacity for professional workloads. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9555) and SP5 (EPYC 9655).
| Feature | EPYC 9555 | EPYC 9655 |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-6000 | DDR5-6000 |
| Max RAM Capacity | 6 TB | 9 TB+50% |
| 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 9655 targets Data Center. Direct competitor: EPYC 9555 rivals Xeon 6972P; EPYC 9655 rivals Xeon 6979P.
| Feature | EPYC 9555 | EPYC 9655 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | No |
| AVX-512 | — | Yes |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center | Data Center |
Value Analysis
At launch, the EPYC 9555 was priced at $9826, while the EPYC 9655 came in at $11852. On launch pricing ($9826 vs $11852), EPYC 9555 was $2026 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 13.2 pts/$ for the EPYC 9655 — making the EPYC 9555 the 2.9% better value option.
| Feature | EPYC 9555 | EPYC 9655 |
|---|---|---|
| MSRP | $9826-17% | $11852 |
| Performance per Dollar | 13.6+3% | 13.2 |
| Release Date | 2024 | 2024 |
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