Today we get a hands on with the latest Seasonic Prime PX-2200, a delayed review as we updated our hardware test suite in the background this year. Priced between £460 and £500 in the UK, this is not for the faint of heart. This unit has achieved Cybenetics Platinum certification and supports the ATX 3.1/PCIe 5.1 spec. It also ships with a 12-year warranty.

The Seasonic Prime PX-2200 is the company’s flagship 2200W power supply built from the ground up to meet ATX 3.1 and PCIe 5.1 standards, delivering headroom well beyond typical gaming rigs. With flagship-class efficiency and build quality, it’s engineered for high-end workstations, AI systems, multi-GPU setups, and pro workloads that demand sustained, clean power.

PX-2200 Features:

• High efficiency – 80 PLUS® Platinum EU 230 V Internally certified
• ATX 3 and 16-Pin PCIe Gen 5 Cable (12V-2×6)
• MTLR (Micro Tolerance Load Regulation) @ 1 %
• Premium Hybrid Fan Control – Fanless under 40 % system load
• Super low ripple noise (35 mV)
• High-end components and design
• Gold-plated high current terminals
• Highly reliable aluminum electrolytic solid capacitors
• Cable-free Connection Design: reduces production errors during manual insertion
• Protection features: OPP, OVP, UVP, OCP, OTP, SCP
• AC Input 200 – 240 Vac
• 12-year warranty – industry-leading