EPYC 9455P vs Ryzen 9 5900X
EPYC 9455P
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 9455P
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9455P | Ryzen 9 5900X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($4,366) | ✅ More affordable ($350) |
| Longevity | ✨ Modern (Turin (2024) / 4 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | EPYC 9455P | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+316%) |
| Upfront Cost | ⚠️ Higher cost ($4,366) | ✅ 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 9455P and Ryzen 9 5900X
EPYC 9455P
The EPYC 9455P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 48 cores and 96 threads. Base frequency is 3.15 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): 300 Watt. Memory support: DDR5. Passmark benchmark score: 116,926 points. Launch price was $4,819.
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 9455P packs 48 cores / 96 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the EPYC 9455P has 36 more cores. Boost clocks reach 4.4 GHz on the EPYC 9455P versus 4.8 GHz on the Ryzen 9 5900X — a 8.7% clock advantage for the Ryzen 9 5900X (base: 3.15 GHz vs 3.7 GHz). The EPYC 9455P 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 9455P scores 116,926 against the Ryzen 9 5900X's 38,955 — a 100% lead for the EPYC 9455P. Geekbench 6 single-core — the metric most relevant to gaming — records 1,962 vs 2,174, a 10.3% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 1,898 vs 11,888 (144.9% advantage for the Ryzen 9 5900X). L3 cache: 256 MB (total) on the EPYC 9455P vs 64 MB on the Ryzen 9 5900X.
| Feature | EPYC 9455P | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 48 / 96+300% | 12 / 24 |
| Boost Clock | 4.4 GHz | 4.8 GHz+9% |
| Base Clock | 3.15 GHz | 3.7 GHz+17% |
| L3 Cache | 256 MB (total)+300% | 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 | 116,926+200% | 38,955 |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | 1,962 | 2,174+11% |
| Geekbench 6 Multi | 1,898 | 11,888+526% |
Memory & Platform
The EPYC 9455P 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 9455P versus DDR4-3200 on the Ryzen 9 5900X — the EPYC 9455P 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 9455P) vs 2 (Ryzen 9 5900X). PCIe lanes: 128 (EPYC 9455P) vs 24 (Ryzen 9 5900X) — the EPYC 9455P offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP5 (EPYC 9455P) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | EPYC 9455P | 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
Virtualization support: AMD-V, SEV-SNP (EPYC 9455P) vs AMD-V (Ryzen 9 5900X). Primary use case: EPYC 9455P targets Data Center / Single Socket, Ryzen 9 5900X targets Workstation. Direct competitor: EPYC 9455P rivals Xeon 6766E; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | EPYC 9455P | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V |
| Target Use | Data Center / Single Socket | Workstation |
Value Analysis
The EPYC 9455P launched at $4819 MSRP, while the Ryzen 9 5900X debuted at $549. At current prices ($4366 vs $350), the Ryzen 9 5900X is $4016 cheaper. In terms of value (PassMark points per dollar), the EPYC 9455P delivers 26.8 pts/$ vs 111.3 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 122.4% better value option.
| Feature | EPYC 9455P | Ryzen 9 5900X |
|---|---|---|
| MSRP | $4819 | $549-89% |
| Avg Price (30d) | $4366 | $350-92% |
| Performance per Dollar | 26.8 | 111.3+315% |
| Release Date | 2024 | 2020 |
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