Ryzen Threadripper PRO 3955WX vs Xeon 6505P
Ryzen Threadripper PRO 3955WX
Xeon 6505P
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 3955WX
Performance Per Dollar Xeon 6505P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen Threadripper PRO 3955WX | Xeon 6505P |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($1,130) | ✅ More affordable ($563) |
| Longevity | ✨ Modern (Castle Peak (2020) / 7 nm, 12 nm) | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) |
💎 Value Proposition
| Insight | Ryzen Threadripper PRO 3955WX | Xeon 6505P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+98%) |
| Upfront Cost | ⚠️ Higher cost ($1,130) | ✅ More affordable ($563) |
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 3955WX and Xeon 6505P
Ryzen Threadripper PRO 3955WX
The Ryzen Threadripper PRO 3955WX is manufactured by AMD. It was released in 14 July 2020 (5 years ago). It is based on the Castle Peak (2020) architecture. It features 16 cores and 32 threads. Base frequency is 3.9 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: sWRX8. Thermal design power (TDP): 280 Watt. Memory support: DDR4-3200. Passmark benchmark score: 39,929 points. Launch price was $1,149.
Xeon 6505P
The Xeon 6505P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Granite Rapids (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 2.2 GHz, with boost up to 4.1 GHz. L3 cache: 48 MB (total). L2 cache: 2 MB (per core). Built on Intel 3 nm process technology. Socket: LGA4710. Thermal design power (TDP): 150 Watt. Memory support: DDR5(6400MT/s). Passmark benchmark score: 39,341 points. Launch price was $563.
Processing Power
The Ryzen Threadripper PRO 3955WX packs 16 cores / 32 threads, while the Xeon 6505P offers 12 cores / 24 threads — the Ryzen Threadripper PRO 3955WX has 4 more cores. Boost clocks reach 4.3 GHz on the Ryzen Threadripper PRO 3955WX versus 4.1 GHz on the Xeon 6505P — a 4.8% clock advantage for the Ryzen Threadripper PRO 3955WX (base: 3.9 GHz vs 2.2 GHz). The Ryzen Threadripper PRO 3955WX uses the Castle Peak (2020) architecture (7 nm, 12 nm), while the Xeon 6505P uses Granite Rapids (2024−2025) (Intel 3 nm). In PassMark, the Ryzen Threadripper PRO 3955WX scores 39,929 against the Xeon 6505P's 39,341 — a 1.5% lead for the Ryzen Threadripper PRO 3955WX. L3 cache: 64 MB on the Ryzen Threadripper PRO 3955WX vs 48 MB (total) on the Xeon 6505P.
| Feature | Ryzen Threadripper PRO 3955WX | Xeon 6505P |
|---|---|---|
| Cores / Threads | 16 / 32+33% | 12 / 24 |
| Boost Clock | 4.3 GHz+5% | 4.1 GHz |
| Base Clock | 3.9 GHz+77% | 2.2 GHz |
| L3 Cache | 64 MB+33% | 48 MB (total) |
| L2 Cache | 512 kB (per core) | 2 MB (per core)+300% |
| Process | 7 nm, 12 nm | Intel 3 nm-57% |
| Architecture | Castle Peak (2020) | Granite Rapids (2024−2025) |
| PassMark | 39,929+1% | 39,341 |
Memory & Platform
The Ryzen Threadripper PRO 3955WX uses the sWRX8 socket (PCIe 4.0), while the Xeon 6505P uses LGA4710 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 3200 on the Ryzen Threadripper PRO 3955WX versus 6400 on the Xeon 6505P — the Xeon 6505P supports 66.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon 6505P supports up to 4096 of RAM compared to 2048 — 66.7% more capacity for professional workloads. Both feature 8-channel memory with ECC support. PCIe lanes: 128 (Ryzen Threadripper PRO 3955WX) vs 88 (Xeon 6505P) — the Ryzen Threadripper PRO 3955WX offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: WRX80 (Ryzen Threadripper PRO 3955WX) and LGA4710 (Xeon 6505P).
| Feature | Ryzen Threadripper PRO 3955WX | Xeon 6505P |
|---|---|---|
| Socket | sWRX8 | LGA4710 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | 3200 | 6400+100% |
| Max RAM Capacity | 2048 | 4096+100% |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128+45% | 88 |
Advanced Features
Only the Ryzen Threadripper PRO 3955WX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, AMD-V (Ryzen Threadripper PRO 3955WX) vs VT-x, VT-d (Xeon 6505P). Direct competitor: Ryzen Threadripper PRO 3955WX rivals Xeon Silver 4314; Xeon 6505P rivals EPYC 9334.
| Feature | Ryzen Threadripper PRO 3955WX | Xeon 6505P |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d, AMD-V | VT-x, VT-d |
Value Analysis
The Ryzen Threadripper PRO 3955WX launched at $1149 MSRP, while the Xeon 6505P debuted at $563. At current prices ($1130 vs $563), the Xeon 6505P is $567 cheaper. In terms of value (PassMark points per dollar), the Ryzen Threadripper PRO 3955WX delivers 35.3 pts/$ vs 69.9 pts/$ for the Xeon 6505P — making the Xeon 6505P the 65.7% better value option.
| Feature | Ryzen Threadripper PRO 3955WX | Xeon 6505P |
|---|---|---|
| MSRP | $1149 | $563-51% |
| Avg Price (30d) | $1130 | $563-50% |
| Performance per Dollar | 35.3 | 69.9+98% |
| Release Date | 2020 | 2025 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Ryzen Threadripper PRO 3955WX and Xeon 6505P
