EPYC 9655 vs EPYC 9555
EPYC 9655
EPYC 9555
Performance Spectrum - CPU
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar EPYC 9655
Performance Per Dollar EPYC 9555
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9655 | EPYC 9555 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($11,852) | ✅ More affordable ($7,973) |
| Longevity | ✨ Modern (Turin (2024) / 4 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | EPYC 9655 | EPYC 9555 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+27%) |
| Upfront Cost | ⚠️ Higher cost ($11,852) | ✅ More affordable ($7,973) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of EPYC 9655 and EPYC 9555
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.
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.
Processing Power
The EPYC 9655 packs 96 cores / 192 threads, while the EPYC 9555 offers 64 cores / 128 threads — the EPYC 9655 has 32 more cores. Boost clocks reach 4.5 GHz on the EPYC 9655 versus 4.4 GHz on the EPYC 9555 — a 2.2% clock advantage for the EPYC 9655 (base: 2.6 GHz vs 3.2 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9655 scores 156,110 against the EPYC 9555's 133,253 — a 15.8% lead for the EPYC 9655. L3 cache: 384 MB (total) on the EPYC 9655 vs 256 MB (total) on the EPYC 9555.
| Feature | EPYC 9655 | EPYC 9555 |
|---|---|---|
| Cores / Threads | 96 / 192+50% | 64 / 128 |
| Boost Clock | 4.5 GHz+2% | 4.4 GHz |
| Base Clock | 2.6 GHz | 3.2 GHz+23% |
| L3 Cache | 384 MB (total)+50% | 256 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Turin (2024) | Turin (2024) |
| PassMark | 156,110+17% | 133,253 |
| 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 — 40% more capacity for professional workloads. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9655) and SP5 (EPYC 9555).
| Feature | EPYC 9655 | EPYC 9555 |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-6000 | DDR5-6000 |
| Max RAM Capacity | 9 TB+50% | 6 TB |
| RAM Channels | 12 | 12 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128 | 128 |
Advanced Features
Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9655 targets Data Center, EPYC 9555 targets Data Center. Direct competitor: EPYC 9655 rivals Xeon 6979P; EPYC 9555 rivals Xeon 6972P.
| Feature | EPYC 9655 | EPYC 9555 |
|---|---|---|
| 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
The EPYC 9655 launched at $11852 MSRP, while the EPYC 9555 debuted at $9826. At current prices ($11852 vs $7973), the EPYC 9555 is $3879 cheaper. In terms of value (PassMark points per dollar), the EPYC 9655 delivers 13.2 pts/$ vs 16.7 pts/$ for the EPYC 9555 — making the EPYC 9555 the 23.7% better value option.
| Feature | EPYC 9655 | EPYC 9555 |
|---|---|---|
| MSRP | $11852 | $9826-17% |
| Avg Price (30d) | $11852 | $7973-33% |
| Performance per Dollar | 13.2 | 16.7+27% |
| Release Date | 2024 | 2024 |
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