EPYC 4585PX
Ryzen Threadripper PRO 9955WX
EPYC 4585PX vs Ryzen Threadripper PRO 9955WX Performance Spectrum
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.
EPYC 4585PX vs Ryzen Threadripper PRO 9955WX FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
EPYC 4585PX vs Ryzen Threadripper PRO 9955WX: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 4585PX
2025Why buy it
- ✅+4.4% higher PassMark.
- ✅+100% larger total L3 cache (128 MB vs 64 MB).
- ✅Draws 170W instead of 350W, a 180W reduction.
- ✅Integrated graphics onboard with AMD Radeon Graphics, while Ryzen Threadripper PRO 9955WX needs a discrete GPU.
Trade-offs
- ❌Lower PassMark per dollar, at 100.9 vs 157.5 PassMark/$ ($699 MSRP vs $429 MSRP).
Ryzen Threadripper PRO 9955WX
2025Why buy it
- ✅Costs $270 less on MSRP ($429 MSRP vs $699 MSRP).
- ✅Delivers 56.0% more PassMark for each dollar spent, at 157.5 vs 100.9 PassMark/$ ($429 MSRP vs $699 MSRP).
- ✅357.1% more PCIe lanes (128 vs 28) for storage and expansion-heavy builds.
Trade-offs
- ❌Lower PassMark (67,561 vs 70,563).
- ❌Smaller total L3 cache (64 MB vs 128 MB).
- ❌105.9% higher power demand at 350W vs 170W.
- ❌No integrated graphics, while EPYC 4585PX can still boot and troubleshoot without a discrete GPU.
Quick Answers
So, is EPYC 4585PX better than Ryzen Threadripper PRO 9955WX?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
EPYC 4585PX vs Ryzen Threadripper PRO 9955WX Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
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.
Ryzen Threadripper PRO 9955WX
The Ryzen Threadripper PRO 9955WX 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 16 cores and 32 threads. Base frequency is 4.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 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: 67,561 points. Launch price was $1,649.
Processing Power
Both the EPYC 4585PX and Ryzen Threadripper PRO 9955WX share an identical 16-core/32-thread configuration. Boost clocks reach 5.7 GHz on the EPYC 4585PX versus 5.4 GHz on the Ryzen Threadripper PRO 9955WX — a 5.4% clock advantage for the EPYC 4585PX (base: 4.3 GHz vs 4.5 GHz). The EPYC 4585PX uses the Grado (2025) architecture (4 nm), while the Ryzen Threadripper PRO 9955WX uses Shimada Peak (2025) (4 nm). In PassMark, the EPYC 4585PX scores 70,563 against the Ryzen Threadripper PRO 9955WX's 67,561 — a 4.3% lead for the EPYC 4585PX. L3 cache: 128 MB (total) on the EPYC 4585PX vs 64 MB (total) on the Ryzen Threadripper PRO 9955WX.
| Feature | EPYC 4585PX | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Cores / Threads | 16 / 32 | 16 / 32 |
| Boost Clock | 5.7 GHz+6% | 5.4 GHz |
| Base Clock | 4.3 GHz | 4.5 GHz+5% |
| L3 Cache | 128 MB (total)+100% | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Grado (2025) | Shimada Peak (2025) |
| PassMark | 70,563+4% | 67,561 |
| Cinebench R23 Multi | — | 40,000 |
| Geekbench 6 Single | — | 3,016 |
| Geekbench 6 Multi | — | 23,596 |
Memory & Platform
The EPYC 4585PX uses the AM5 socket (PCIe 4.0), while the Ryzen Threadripper PRO 9955WX uses sTR5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5600 on the EPYC 4585PX versus DDR5-6400 on the Ryzen Threadripper PRO 9955WX — the Ryzen Threadripper PRO 9955WX supports 14.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen Threadripper PRO 9955WX supports up to 2048 GB of RAM compared to 256 GB — 700% more capacity for professional workloads. Memory channels: 2 (EPYC 4585PX) vs 8 (Ryzen Threadripper PRO 9955WX). PCIe lanes: 28 (EPYC 4585PX) vs 128 (Ryzen Threadripper PRO 9955WX) — the Ryzen Threadripper PRO 9955WX offers 100 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM5 (EPYC 4585PX) and WRX90 (Ryzen Threadripper PRO 9955WX).
| Feature | EPYC 4585PX | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Socket | AM5 | sTR5 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | 5600 | DDR5-6400+14% |
| Max RAM Capacity | 256 GB | 2048 GB+700% |
| RAM Channels | 2 | 8+300% |
| ECC Support | Yes | Yes |
| PCIe Lanes | 28 | 128+357% |
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: VT-x, VT-d, AMD-V (EPYC 4585PX) vs true (Ryzen Threadripper PRO 9955WX). The EPYC 4585PX includes integrated graphics (AMD Radeon Graphics), while the Ryzen Threadripper PRO 9955WX requires a dedicated GPU. Direct competitor: EPYC 4585PX rivals Core Ultra 9 285K; Ryzen Threadripper PRO 9955WX rivals Xeon w7-3555.
| Feature | EPYC 4585PX | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | AMD Radeon Graphics | None |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d, AMD-V | true |
Value Analysis
At launch, the EPYC 4585PX was priced at $699, while the Ryzen Threadripper PRO 9955WX came in at $429. On launch pricing ($699 vs $429), Ryzen Threadripper PRO 9955WX was $270 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4585PX delivers 100.9 pts/$ vs 157.5 pts/$ for the Ryzen Threadripper PRO 9955WX — making the Ryzen Threadripper PRO 9955WX the 43.8% better value option.
| Feature | EPYC 4585PX | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| MSRP | $699 | $429-39% |
| Performance per Dollar | 100.9 | 157.5+56% |
| Release Date | 2025 | 2025 |
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