Ryzen Threadripper PRO 9975WX vs EPYC 9455P
Ryzen Threadripper PRO 9975WX
EPYC 9455P
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 Ryzen Threadripper PRO 9975WX
Performance Per Dollar EPYC 9455P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen Threadripper PRO 9975WX | EPYC 9455P |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($4,182) | ⚠️ Higher cost ($4,366) |
| Longevity | ✨ Modern (Shimada Peak (2025) / 4 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen Threadripper PRO 9975WX | EPYC 9455P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+5%) |
| Upfront Cost | ✅ More affordable ($4,182) | ⚠️ Higher cost ($4,366) |
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 Ryzen Threadripper PRO 9975WX and EPYC 9455P
Ryzen Threadripper PRO 9975WX
The Ryzen Threadripper PRO 9975WX is manufactured by AMD. It was released in 23 July 2025 (less than a year ago). It is based on the Shimada Peak (2025) architecture. It features 32 cores and 64 threads. Base frequency is 4 GHz, with boost up to 5.4 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: sTR5. Thermal design power (TDP): 350 Watt. Memory support: DDR5. Passmark benchmark score: 106,263 points. Launch price was $4,099.
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.
Processing Power
The Ryzen Threadripper PRO 9975WX packs 32 cores / 64 threads, while the EPYC 9455P offers 48 cores / 96 threads — the EPYC 9455P has 16 more cores. Boost clocks reach 5.4 GHz on the Ryzen Threadripper PRO 9975WX versus 4.4 GHz on the EPYC 9455P — a 20.4% clock advantage for the Ryzen Threadripper PRO 9975WX (base: 4 GHz vs 3.15 GHz). The Ryzen Threadripper PRO 9975WX uses the Shimada Peak (2025) architecture (4 nm), while the EPYC 9455P uses Turin (2024) (4 nm). In PassMark, the Ryzen Threadripper PRO 9975WX scores 106,263 against the EPYC 9455P's 116,926 — a 9.6% lead for the EPYC 9455P. Geekbench 6 single-core — the metric most relevant to gaming — records 3,200 vs 1,962, a 48% lead for the Ryzen Threadripper PRO 9975WX that directly translates to higher frame rates. Multi-core Geekbench: 31,000 vs 1,898 (176.9% advantage for the Ryzen Threadripper PRO 9975WX). L3 cache: 128 MB (total) on the Ryzen Threadripper PRO 9975WX vs 256 MB (total) on the EPYC 9455P.
| Feature | Ryzen Threadripper PRO 9975WX | EPYC 9455P |
|---|---|---|
| Cores / Threads | 32 / 64 | 48 / 96+50% |
| Boost Clock | 5.4 GHz+23% | 4.4 GHz |
| Base Clock | 4 GHz+27% | 3.15 GHz |
| L3 Cache | 128 MB (total) | 256 MB (total)+100% |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Shimada Peak (2025) | Turin (2024) |
| PassMark | 106,263 | 116,926+10% |
| Cinebench R23 Multi | 83,982 | — |
| Geekbench 6 Single | 3,200+63% | 1,962 |
| Geekbench 6 Multi | 31,000+1533% | 1,898 |
Memory & Platform
The Ryzen Threadripper PRO 9975WX uses the sTR5 socket (PCIe 4.0), while the EPYC 9455P uses SP5 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The Ryzen Threadripper PRO 9975WX supports up to 2048 GB of RAM compared to 9 TB — 198.2% more capacity for professional workloads. Memory channels: 8 (Ryzen Threadripper PRO 9975WX) vs 12 (EPYC 9455P). Both provide 128 PCIe lanes. Chipset compatibility: WRX90,TRX50 (Ryzen Threadripper PRO 9975WX) and SP5 (EPYC 9455P).
| Feature | Ryzen Threadripper PRO 9975WX | EPYC 9455P |
|---|---|---|
| Socket | sTR5 | SP5 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | DDR5-6400 | DDR5-6000 |
| Max RAM Capacity | 2048 GB | 9 TB+350% |
| RAM Channels | 8 | 12+50% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128 | 128 |
Advanced Features
Virtualization support: true (Ryzen Threadripper PRO 9975WX) vs AMD-V, SEV-SNP (EPYC 9455P). Primary use case: Ryzen Threadripper PRO 9975WX targets High-end Workstation, EPYC 9455P targets Data Center / Single Socket. Direct competitor: Ryzen Threadripper PRO 9975WX rivals Xeon w7-3465X; EPYC 9455P rivals Xeon 6766E.
| Feature | Ryzen Threadripper PRO 9975WX | EPYC 9455P |
|---|---|---|
| Integrated GPU | No | No |
| AVX-512 | Yes | — |
| Virtualization | true | AMD-V, SEV-SNP |
| Target Use | High-end Workstation | Data Center / Single Socket |
Value Analysis
The Ryzen Threadripper PRO 9975WX launched at $4099 MSRP, while the EPYC 9455P debuted at $4819. At current prices ($4182 vs $4366), the Ryzen Threadripper PRO 9975WX is $184 cheaper. In terms of value (PassMark points per dollar), the Ryzen Threadripper PRO 9975WX delivers 25.4 pts/$ vs 26.8 pts/$ for the EPYC 9455P — making the EPYC 9455P the 5.3% better value option.
| Feature | Ryzen Threadripper PRO 9975WX | EPYC 9455P |
|---|---|---|
| MSRP | $4099-15% | $4819 |
| Avg Price (30d) | $4182-4% | $4366 |
| Performance per Dollar | 25.4 | 26.8+6% |
| Release Date | 2025 | 2024 |
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