Seasonic Prime PX-2200 ATX 3.1 PSU Review

1. Introduction2. Bundle & Cabling3. External4. Internal5. Testing Methodology and Results6. Closing Thoughts7. View All Pages

There is no question that the Seasonic Prime PX-2200 fully earns its flagship status. As Seasonic’s own top-tier design, the overall execution is exactly what we would expect from one of the most respected PSU manufacturers in the industry, with excellent build quality and robust power delivery throughout our testing.

Externally, construction quality is excellent. The power supply is physically large at 210mm in length and extremely heavy, reflecting the amount of hardware packed inside. Internally, everything aligns with Seasonic’s Prime pedigree. Three high-grade Nippon Chemi-Con 105°C capacitors handle the primary stage, delivering a combined 2,460 uF of bulk capacitance. Secondary-side components continue the premium theme, with capacitors sourced exclusively from Nippon Chemi-Con and Rubycon. Soldering quality and internal layout are exemplary.

The Prime PX-2200 employs a full-bridge LLC topology with synchronous rectification and DC-DC conversion, ensuring stable and efficient power delivery across the entire load range. Peak efficiency approached 95% in our testing, which is outstanding and among the strongest results we have recorded in the lab.

Cooling is handled by a high-grade Hong Hua fluid dynamic bearing fan. For the majority of operating conditions the unit remains impressively quiet, only becoming clearly audible once load levels exceed around 1,800 watts. At sustained operation near the full 2200 watt rating, fan noise does increase noticeably, though this is entirely expected given the thermal demands involved.

Realistically, very few users will ever need this level of power capacity. However, for high-end workstations, AI workloads, or multi-GPU systems pushing extreme 12V current demands, the Prime PX-2200 provides a rock-solid foundation. Seasonic positions this unit for professional workloads, AI computing, and next-generation enthusiast systems, and our results support that intent. So they say anyway, I don't personally know anyone who needs a 2200 watt power supply, but they are clearly out there!

At the time of writing, UK pricing at Scan sits at £469.99 (HERE). This is undeniably a significant investment, but when viewed in the context of the performance on offer, component quality, and the lengthy 12-year warranty, it represents a compelling option at the very top end of the PSU market.

If you genuinely need extreme power delivery with long-term reliability in mind, the Seasonic Prime PX-2200 comes highly recommended.

Pros:

• Exceptional efficiency levels.
• Outstanding power delivery.
• High-quality modular cabling.
• Excellent build quality throughout.
• Sustained 2200 W output capability.
• 105 °C-rated Japanese capacitors on both primary and secondary stages.
• Very high bulk capacitance (2,460 uF).

Cons:

• Expensive.
• Physically large at 210 mm.
• Ripple suppression is good, but not class-leading.

KitGuru says: The Seasonic Prime PX-2200 delivers outstanding build quality and power delivery. For high-end workstations or multi-GPU systems requiring massive 12V output, it is one of the strongest options currently available.

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