Seasonic Vertex PX-1200 1200W 80+ Platinum ATX power supply

Vertex PX-1200 1200W ATX Power Supply

The Seasonic Vertex PX-1200 delivers 1200W of continuous power in a standard ATX form factor. It carries 80+ Platinum certification for high efficiency across typical loads. This unit suits enthusiasts building high-end workstations or multi-GPU systems that demand substantial, stable power delivery.

Upgrading from lower-wattage

Replaces power supplies that cannot sustain 1200W or lack Platinum-level efficiency, reducing waste heat and electricity cost under heavy load. The jump is worth it when your build draws near the 1200W limit or when you prioritise efficiency at high utilisation. Not for systems that peak well below this capacity or for builders who need a smaller form factor.