Xeon 6505P vs Ryzen 9 3950X
Xeon 6505P
Ryzen 9 3950X
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 9 3950X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 6505P | Ryzen 9 3950X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($563) | ✅ More affordable ($389) |
| Longevity | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) | ✨ Modern (Matisse (Zen 2) (2019−2020) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Xeon 6505P | Ryzen 9 3950X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+42%) |
| Upfront Cost | ⚠️ Higher cost ($563) | ✅ More affordable ($389) |
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 9 3950X
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 9 3950X
The Ryzen 9 3950X is manufactured by AMD. It was released in 14 November 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 16 cores and 32 threads. Base frequency is 3.5 GHz, with boost up to 4.7 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 Dual-channel. Passmark benchmark score: 38,519 points. Launch price was $799.
Processing Power
The Xeon 6505P packs 12 cores / 24 threads, while the Ryzen 9 3950X offers 16 cores / 32 threads — the Ryzen 9 3950X has 4 more cores. Boost clocks reach 4.1 GHz on the Xeon 6505P versus 4.7 GHz on the Ryzen 9 3950X — a 13.6% clock advantage for the Ryzen 9 3950X (base: 2.2 GHz vs 3.5 GHz). The Xeon 6505P uses the Granite Rapids (2024−2025) architecture (Intel 3 nm), while the Ryzen 9 3950X uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the Xeon 6505P scores 39,341 against the Ryzen 9 3950X's 38,519 — a 2.1% lead for the Xeon 6505P. L3 cache: 48 MB (total) on the Xeon 6505P vs 64 MB on the Ryzen 9 3950X.
| Feature | Xeon 6505P | Ryzen 9 3950X |
|---|---|---|
| Cores / Threads | 12 / 24 | 16 / 32+33% |
| Boost Clock | 4.1 GHz | 4.7 GHz+15% |
| Base Clock | 2.2 GHz | 3.5 GHz+59% |
| L3 Cache | 48 MB (total) | 64 MB+33% |
| L2 Cache | 2 MB (per core)+300% | 512K (per core) |
| Process | Intel 3 nm-57% | 7 nm, 12 nm |
| Architecture | Granite Rapids (2024−2025) | Matisse (Zen 2) (2019−2020) |
| PassMark | 39,341+2% | 38,519 |
Memory & Platform
The Xeon 6505P uses the LGA4710 socket (PCIe 5.0), while the Ryzen 9 3950X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 6400 on the Xeon 6505P versus DDR4-3200 on the Ryzen 9 3950X — the Xeon 6505P supports 199.8% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon 6505P supports up to 4096 of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 8 (Xeon 6505P) vs 2 (Ryzen 9 3950X). PCIe lanes: 88 (Xeon 6505P) vs 24 (Ryzen 9 3950X) — the Xeon 6505P offers 64 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA4710 (Xeon 6505P) and X570,B550 (Ryzen 9 3950X).
| Feature | Xeon 6505P | Ryzen 9 3950X |
|---|---|---|
| Socket | LGA4710 | AM4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | 6400+159900% | DDR4-3200 |
| Max RAM Capacity | 4096 | 128 GB+3276700% |
| RAM Channels | 8+300% | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 88+267% | 24 |
Advanced Features
Only the Ryzen 9 3950X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon 6505P supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Xeon 6505P) vs AMD-V (Ryzen 9 3950X). Direct competitor: Xeon 6505P rivals EPYC 9334.
| Feature | Xeon 6505P | Ryzen 9 3950X |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | — |
| Unlocked | No | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | AMD-V |
Value Analysis
The Xeon 6505P launched at $563 MSRP, while the Ryzen 9 3950X debuted at $749. At current prices ($563 vs $389), the Ryzen 9 3950X is $174 cheaper. In terms of value (PassMark points per dollar), the Xeon 6505P delivers 69.9 pts/$ vs 99.0 pts/$ for the Ryzen 9 3950X — making the Ryzen 9 3950X the 34.5% better value option.
| Feature | Xeon 6505P | Ryzen 9 3950X |
|---|---|---|
| MSRP | $563-25% | $749 |
| Avg Price (30d) | $563 | $389-31% |
| Performance per Dollar | 69.9 | 99.0+42% |
| Release Date | 2025 | 2019 |
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