Corsair RM850 850W

This is a 850W unit with 80+ Gold efficiency certification and full cabling. 850W covers a 300W+ flagship GPU plus a high-end CPU with margin to spare. It uses the ATX form factor — confirm your case lists ATX support. Power supplies are the wrong place to cut corners — efficiency certification correlates with build quality and warranty length.

Expect to pay around $109.99, which lands it among mid-range options. PlanMyPC's builder flags compatibility problems automatically and tracks the latest power supply deals from multiple stores. Corsair backs the product through its standard warranty channels; check the listing for region-specific terms.