Xeon 6505P vs Ryzen Threadripper PRO 3955WX
Xeon 6505P
Ryzen Threadripper PRO 3955WX
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 Xeon 6505P
Performance Per Dollar Ryzen Threadripper PRO 3955WX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 6505P | Ryzen Threadripper PRO 3955WX |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($563) | ⚠️ Higher cost ($1,130) |
| Longevity | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) | ✨ Modern (Castle Peak (2020) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Xeon 6505P | Ryzen Threadripper PRO 3955WX |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+98%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($563) | ⚠️ Higher cost ($1,130) |
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 Xeon 6505P and Ryzen Threadripper PRO 3955WX
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.
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.
Processing Power
The Xeon 6505P packs 12 cores / 24 threads, while the Ryzen Threadripper PRO 3955WX offers 16 cores / 32 threads — the Ryzen Threadripper PRO 3955WX has 4 more cores. Boost clocks reach 4.1 GHz on the Xeon 6505P versus 4.3 GHz on the Ryzen Threadripper PRO 3955WX — a 4.8% clock advantage for the Ryzen Threadripper PRO 3955WX (base: 2.2 GHz vs 3.9 GHz). The Xeon 6505P uses the Granite Rapids (2024−2025) architecture (Intel 3 nm), while the Ryzen Threadripper PRO 3955WX uses Castle Peak (2020) (7 nm, 12 nm). In PassMark, the Xeon 6505P scores 39,341 against the Ryzen Threadripper PRO 3955WX's 39,929 — a 1.5% lead for the Ryzen Threadripper PRO 3955WX. L3 cache: 48 MB (total) on the Xeon 6505P vs 64 MB on the Ryzen Threadripper PRO 3955WX.
| Feature | Xeon 6505P | Ryzen Threadripper PRO 3955WX |
|---|---|---|
| Cores / Threads | 12 / 24 | 16 / 32+33% |
| Boost Clock | 4.1 GHz | 4.3 GHz+5% |
| Base Clock | 2.2 GHz | 3.9 GHz+77% |
| L3 Cache | 48 MB (total) | 64 MB+33% |
| L2 Cache | 2 MB (per core)+300% | 512 kB (per core) |
| Process | Intel 3 nm-57% | 7 nm, 12 nm |
| Architecture | Granite Rapids (2024−2025) | Castle Peak (2020) |
| PassMark | 39,341 | 39,929+1% |
Memory & Platform
The Xeon 6505P uses the LGA4710 socket (PCIe 5.0), while the Ryzen Threadripper PRO 3955WX uses sWRX8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 6400 on the Xeon 6505P versus 3200 on the Ryzen Threadripper PRO 3955WX — 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: 88 (Xeon 6505P) vs 128 (Ryzen Threadripper PRO 3955WX) — the Ryzen Threadripper PRO 3955WX offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA4710 (Xeon 6505P) and WRX80 (Ryzen Threadripper PRO 3955WX).
| Feature | Xeon 6505P | Ryzen Threadripper PRO 3955WX |
|---|---|---|
| Socket | LGA4710 | sWRX8 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | 6400+100% | 3200 |
| Max RAM Capacity | 4096+100% | 2048 |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 88 | 128+45% |
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 (Xeon 6505P) vs VT-x, VT-d, AMD-V (Ryzen Threadripper PRO 3955WX). Direct competitor: Xeon 6505P rivals EPYC 9334; Ryzen Threadripper PRO 3955WX rivals Xeon Silver 4314.
| Feature | Xeon 6505P | Ryzen Threadripper PRO 3955WX |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | VT-x, VT-d, AMD-V |
Value Analysis
The Xeon 6505P launched at $563 MSRP, while the Ryzen Threadripper PRO 3955WX debuted at $1149. At current prices ($563 vs $1130), the Xeon 6505P is $567 cheaper. In terms of value (PassMark points per dollar), the Xeon 6505P delivers 69.9 pts/$ vs 35.3 pts/$ for the Ryzen Threadripper PRO 3955WX — making the Xeon 6505P the 65.7% better value option.
| Feature | Xeon 6505P | Ryzen Threadripper PRO 3955WX |
|---|---|---|
| MSRP | $563-51% | $1149 |
| Avg Price (30d) | $563-50% | $1130 |
| Performance per Dollar | 69.9+98% | 35.3 |
| Release Date | 2025 | 2020 |
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