EPYC 9655 vs Ryzen 9 5900X
EPYC 9655
Ryzen 9 5900X
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 Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9655 | Ryzen 9 5900X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($11,852) | ✅ More affordable ($350) |
| Longevity | ✨ Modern (Turin (2024) / 4 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | EPYC 9655 | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+745%) |
| Upfront Cost | ⚠️ Higher cost ($11,852) | ✅ More affordable ($350) |
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 Ryzen 9 5900X
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.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.
Processing Power
The EPYC 9655 packs 96 cores / 192 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the EPYC 9655 has 84 more cores. Boost clocks reach 4.5 GHz on the EPYC 9655 versus 4.8 GHz on the Ryzen 9 5900X — a 6.5% clock advantage for the Ryzen 9 5900X (base: 2.6 GHz vs 3.7 GHz). The EPYC 9655 uses the Turin (2024) architecture (4 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the EPYC 9655 scores 156,110 against the Ryzen 9 5900X's 38,955 — a 120.1% lead for the EPYC 9655. Geekbench 6 single-core — the metric most relevant to gaming — records 2,830 vs 2,174, a 26.2% lead for the EPYC 9655 that directly translates to higher frame rates. Multi-core Geekbench: 29,329 vs 11,888 (84.6% advantage for the EPYC 9655). L3 cache: 384 MB (total) on the EPYC 9655 vs 64 MB on the Ryzen 9 5900X.
| Feature | EPYC 9655 | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 96 / 192+700% | 12 / 24 |
| Boost Clock | 4.5 GHz | 4.8 GHz+7% |
| Base Clock | 2.6 GHz | 3.7 GHz+42% |
| L3 Cache | 384 MB (total)+500% | 64 MB |
| L2 Cache | 1 MB (per core)+100% | 512K (per core) |
| Process | 4 nm-43% | 7 nm, 12 nm |
| Architecture | Turin (2024) | Vermeer (Zen3) (2020−2022) |
| PassMark | 156,110+301% | 38,955 |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | 2,830+30% | 2,174 |
| Geekbench 6 Multi | 29,329+147% | 11,888 |
Memory & Platform
The EPYC 9655 uses the SP5 socket (PCIe 5.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6000 on the EPYC 9655 versus DDR4-3200 on the Ryzen 9 5900X — the EPYC 9655 supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 5900X supports up to 128 GB of RAM compared to 9 TB — 173.7% more capacity for professional workloads. Memory channels: 12 (EPYC 9655) vs 2 (Ryzen 9 5900X). PCIe lanes: 128 (EPYC 9655) vs 24 (Ryzen 9 5900X) — the EPYC 9655 offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP5 (EPYC 9655) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | EPYC 9655 | Ryzen 9 5900X |
|---|---|---|
| Socket | SP5 | AM4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-6000+25% | DDR4-3200 |
| Max RAM Capacity | 9 TB+7100% | 128 GB |
| RAM Channels | 12+500% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128+433% | 24 |
Advanced Features
Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the EPYC 9655 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V, SEV-SNP (EPYC 9655) vs AMD-V (Ryzen 9 5900X). Primary use case: EPYC 9655 targets Data Center, Ryzen 9 5900X targets Workstation. Direct competitor: EPYC 9655 rivals Xeon 6979P; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | EPYC 9655 | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | No | Yes |
| AVX-512 | Yes | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V |
| Target Use | Data Center | Workstation |
Value Analysis
The EPYC 9655 launched at $11852 MSRP, while the Ryzen 9 5900X debuted at $549. At current prices ($11852 vs $350), the Ryzen 9 5900X is $11502 cheaper. In terms of value (PassMark points per dollar), the EPYC 9655 delivers 13.2 pts/$ vs 111.3 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 157.7% better value option.
| Feature | EPYC 9655 | Ryzen 9 5900X |
|---|---|---|
| MSRP | $11852 | $549-95% |
| Avg Price (30d) | $11852 | $350-97% |
| Performance per Dollar | 13.2 | 111.3+743% |
| Release Date | 2024 | 2020 |
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