Corsair CX400 400W

A 400W unit with 80+ efficiency certification and non-modular cabling. 400W covers mainstream builds with a modest GPU. It uses the ATX form factor — confirm your case lists ATX support. Skimping on the PSU is a false economy; better efficiency ratings usually mean better components and longer warranties.

Drop it into the PlanMyPC builder to check compatibility with the rest of your parts. Warranty coverage follows Corsair's standard policy — confirm regional terms on the listing. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build. If this power supply is not quite the right fit, the category page lists close alternatives at similar prices for a quick side-by-side comparison.