I am about to receive a new config with an AMD phenom X4 955, a Sapphire HD5770 Vapor-X, 2x2GB Corsair DDR3, 1 HDD and 1 DVD burner, all that with an Advance Triolux 8909 480W, and my question is..........
Will I be able to improve my system by Crossfiring with a second 5770 in the fuure without getting a more powerful Power supply? Or will I need a 650W?
I don't think it's a waste of money at all. Buying new parts should never be about the now, it should always be about what you might do in the future. Yeah he might overbuy for the now, but if he gets more in the future then he's set right?
Yes and no. I mean if he strains his budget for a 650W when he could get away fine with a 450W isn't very smart. But if he wants a 650W anyways then get it, its not bad having too much power.
However, eventhough PSUs is the part of the build that lasts a while, technology do get better with time for less.
Just think about 3 years ago how crazy it would be getting a 650W 80+ Gold modular PSU for $130.