Ryzen 9 9950X3D vs EPYC 4585PX
Ryzen 9 9950X3D
EPYC 4585PX
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 9 9950X3D
Performance Per Dollar EPYC 4585PX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9950X3D | EPYC 4585PX |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($675) | ⚠️ Higher cost ($826) |
| Longevity | ✨ Modern (Granite Ridge (2024−2025) / 4 nm) | ✨ Modern (Grado (2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9950X3D | EPYC 4585PX |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+22%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($675) | ⚠️ Higher cost ($826) |
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 9 9950X3D and EPYC 4585PX
Ryzen 9 9950X3D
The Ryzen 9 9950X3D is manufactured by AMD. It was released in 6 January 2025 (less than a year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.3 GHz, with boost up to 5.7 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 170 Watt. Memory support: DDR5. Passmark benchmark score: 70,177 points. Launch price was $699.
EPYC 4585PX
The EPYC 4585PX is manufactured by AMD. It was released in 13 May 2025 (less than a year ago). It is based on the Grado (2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.3 GHz, with boost up to 5.7 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 170 Watt. Memory support: DDR5. Passmark benchmark score: 70,563 points. Launch price was $699.
Processing Power
Both the Ryzen 9 9950X3D and EPYC 4585PX share an identical 16-core/32-thread configuration. Boost clocks reach 5.7 GHz on the Ryzen 9 9950X3D versus 5.7 GHz on the EPYC 4585PX — identical boost frequencies (base: 4.3 GHz vs 4.3 GHz). The Ryzen 9 9950X3D uses the Granite Ridge (2024−2025) architecture (4 nm), while the EPYC 4585PX uses Grado (2025) (4 nm). In PassMark, the Ryzen 9 9950X3D scores 70,177 against the EPYC 4585PX's 70,563 — a 0.5% lead for the EPYC 4585PX. Both processors carry 128 MB (total) of L3 cache.
| Feature | Ryzen 9 9950X3D | EPYC 4585PX |
|---|---|---|
| Cores / Threads | 16 / 32 | 16 / 32 |
| Boost Clock | 5.7 GHz | 5.7 GHz |
| Base Clock | 4.3 GHz | 4.3 GHz |
| L3 Cache | 128 MB (total) | 128 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Granite Ridge (2024−2025) | Grado (2025) |
| PassMark | 70,177 | 70,563 |
| Cinebench R23 Multi | 44,500 | — |
| Geekbench 6 Single | 3,398 | — |
| Geekbench 6 Multi | 22,206 | — |
Memory & Platform
Both processors use the AM5 socket with PCIe 5.0. Maximum memory speed reaches DDR5-5600 on the Ryzen 9 9950X3D versus 5600 on the EPYC 4585PX — the EPYC 4585PX supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 4585PX supports up to 256 of RAM compared to 192 GB — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 9950X3D) vs 28 (EPYC 4585PX) — the EPYC 4585PX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670E,X670,B650E,B650 (Ryzen 9 9950X3D) and AM5 (EPYC 4585PX).
| Feature | Ryzen 9 9950X3D | EPYC 4585PX |
|---|---|---|
| Socket | AM5 | AM5 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-5600 | 5600+111900% |
| Max RAM Capacity | 192 GB+78643100% | 256 |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 24 | 28+17% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: true (Ryzen 9 9950X3D) vs VT-x, VT-d, AMD-V (EPYC 4585PX). Both include integrated graphics — Radeon Graphics (2 Cores) (Ryzen 9 9950X3D) and AMD Radeon Graphics (EPYC 4585PX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Ryzen 9 9950X3D rivals Core Ultra 9 285K; EPYC 4585PX rivals Core Ultra 9 285K.
| Feature | Ryzen 9 9950X3D | EPYC 4585PX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Radeon Graphics (2 Cores) | AMD Radeon Graphics |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | true | VT-x, VT-d, AMD-V |
Value Analysis
The Ryzen 9 9950X3D launched at $699 MSRP, while the EPYC 4585PX debuted at $699. At current prices ($675 vs $826), the Ryzen 9 9950X3D is $151 cheaper. In terms of value (PassMark points per dollar), the Ryzen 9 9950X3D delivers 104.0 pts/$ vs 85.4 pts/$ for the EPYC 4585PX — making the Ryzen 9 9950X3D the 19.6% better value option.
| Feature | Ryzen 9 9950X3D | EPYC 4585PX |
|---|---|---|
| MSRP | $699 | $699 |
| Avg Price (30d) | $675-18% | $826 |
| Performance per Dollar | 104.0+22% | 85.4 |
| Release Date | 2025 | 2025 |
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