Ryzen 9 5900X
Ryzen Threadripper PRO 3945WX
Ryzen 9 5900X vs Ryzen Threadripper PRO 3945WX 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.
Ryzen 9 5900X vs Ryzen Threadripper PRO 3945WX 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
Ryzen 9 5900X vs Ryzen Threadripper PRO 3945WX: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
Ryzen 9 5900X
2020Why buy it
- ✅Better for gaming: +14.9% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $600 less on MSRP ($549 MSRP vs $1,149 MSRP).
- ✅Delivers 143.7% more PassMark for each dollar spent, at 71.0 vs 29.1 PassMark/$ ($549 MSRP vs $1,149 MSRP).
- ✅Draws 105W instead of 280W, a 175W reduction.
Trade-offs
- ❌Less compelling for workstation-style loads than Ryzen Threadripper PRO 3945WX, which brings 12 cores / 24 threads and 128 PCIe lanes.
Ryzen Threadripper PRO 3945WX
2020Why buy it
- ✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads, plus 128 PCIe lanes vs 24.
- ✅433.3% more PCIe lanes (128 vs 24) for storage and expansion-heavy builds.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
- ❌Lower Cinebench R23 multi-core (18,500 vs 21,000).
- ❌Lower PassMark per dollar, at 29.1 vs 71.0 PassMark/$ ($1,149 MSRP vs $549 MSRP).
- ❌166.7% higher power demand at 280W vs 105W.
Quick Answers
So, is Ryzen 9 5900X better than Ryzen Threadripper PRO 3945WX?
Which one is better for gaming?
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?
Ryzen 9 5900X vs Ryzen Threadripper PRO 3945WX Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 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: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.
Ryzen Threadripper PRO 3945WX
The Ryzen Threadripper PRO 3945WX 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 12 cores and 24 threads. Base frequency is 4 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: 33,455 points. Launch price was $499.
Processing Power
Both the Ryzen 9 5900X and Ryzen Threadripper PRO 3945WX share an identical 12-core/24-thread configuration. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.3 GHz on the Ryzen Threadripper PRO 3945WX — a 11% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 4 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Ryzen Threadripper PRO 3945WX uses Castle Peak (2020) (7 nm, 12 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Ryzen Threadripper PRO 3945WX's 33,455 — a 15.2% lead for the Ryzen 9 5900X. Cinebench R23 multi-core: 21,000 vs 18,500 (12.7% advantage for the Ryzen 9 5900X). Geekbench 6 single-core — the metric most relevant to gaming — records 2,174 vs 1,652, a 27.3% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 11,888 vs 11,500 (3.3% advantage for the Ryzen 9 5900X). Both processors carry 64 MB of L3 cache.
| Feature | Ryzen 9 5900X | Ryzen Threadripper PRO 3945WX |
|---|---|---|
| Cores / Threads | 12 / 24 | 12 / 24 |
| Boost Clock | 4.8 GHz+12% | 4.3 GHz |
| Base Clock | 3.7 GHz | 4 GHz+8% |
| L3 Cache | 64 MB | 64 MB |
| L2 Cache | 512K (per core) | 512 kB (per core) |
| Process | 7 nm, 12 nm | 7 nm, 12 nm |
| Architecture | Vermeer (Zen3) (2020−2022) | Castle Peak (2020) |
| PassMark | 38,955+16% | 33,455 |
| Cinebench R23 Multi | 21,000+14% | 18,500 |
| Geekbench 6 Single | 2,174+32% | 1,652 |
| Geekbench 6 Multi | 11,888+3% | 11,500 |
Memory & Platform
The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Ryzen Threadripper PRO 3945WX uses sWRX8 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Ryzen Threadripper PRO 3945WX supports up to 2048 GB of RAM compared to 128 GB — 1500% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 8 (Ryzen Threadripper PRO 3945WX). PCIe lanes: 24 (Ryzen 9 5900X) vs 128 (Ryzen Threadripper PRO 3945WX) — the Ryzen Threadripper PRO 3945WX offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and WRX80 (Ryzen Threadripper PRO 3945WX).
| Feature | Ryzen 9 5900X | Ryzen Threadripper PRO 3945WX |
|---|---|---|
| Socket | AM4 | sWRX8 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR4-3200 | DDR4-3200 |
| Max RAM Capacity | 128 GB | 2048 GB+1500% |
| RAM Channels | 2 | 8+300% |
| ECC Support | Yes | Yes |
| PCIe Lanes | 24 | 128+433% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Both support AMD-V virtualization. Primary use case: Ryzen 9 5900X targets Workstation, Ryzen Threadripper PRO 3945WX targets Professional Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Ryzen Threadripper PRO 3945WX rivals Xeon w5-2455X.
| Feature | Ryzen 9 5900X | Ryzen Threadripper PRO 3945WX |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | Yes |
| AVX-512 | No | No |
| Virtualization | AMD-V | AMD-V |
| Target Use | Workstation | Professional Workstation |
Value Analysis
At launch, the Ryzen 9 5900X was priced at $549, while the Ryzen Threadripper PRO 3945WX came in at $1149. On launch pricing ($549 vs $1149), Ryzen 9 5900X was $600 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 29.1 pts/$ for the Ryzen Threadripper PRO 3945WX — making the Ryzen 9 5900X the 83.6% better value option.
| Feature | Ryzen 9 5900X | Ryzen Threadripper PRO 3945WX |
|---|---|---|
| MSRP | $549-52% | $1149 |
| Performance per Dollar | 71.0+144% | 29.1 |
| Release Date | 2020 | 2020 |
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