ExactRigFree tool
Power supply calculator
Pick your processor and graphics card and get the power supply size we would use in a build: 25% headroom over the expected draw, and never below the graphics card maker's official minimum.
Recommended supply
450W
Expected peak draw
~355W
16 pin cable needed
No
A supply from our catalog that fits: Corsair CX450 450W Bronze
All results are estimates. Real numbers also depend on the condition of the hardware, cooling, drivers, software and the computer itself.
Common questions
Why add headroom?
Graphics cards draw short power spikes above their rated power. Headroom keeps the supply cool, quiet and stable, and leaves room for an upgrade.
Does a bigger supply waste power?
No. A computer only draws what it needs. A much bigger supply mostly costs more to buy.