I can get an Corsair AX760 for £100, I'll go for that.
I can get an Corsair AX760 for £100, I'll go for that.
I can get an Corsair AX760 for £100, I'll go for that.
Going for a higher rating psu doesn't mean higher bills, thats not how it works. If your machine requires 500w, thats what it'll draw from the wall (plus a bit depending on the efficiency) regardless of whether you're running a 600w or a 1500w psu.