Looking at buying a HD5770 card, and need a new PSU - I only have a 350W at the moment but looking at buying a Thermaltake 650W PSU.
What I'm wondering is, would this 650W PSU be able to run a system plus 2 x HD5770's running in Crossfire? I ask as, although I am only getting one for now, the PSU has a lifetime warranty, so I don't want to have to upgrade the PSU again any time soon to get extra power out of my cards.
This PSU model is really quiet, compared to my previous Silverstone 750W PSU.
I've recently moved from a Zalman 2-ball bearing CPU heatsink/fan, to the CoolIT ECO A.L.C. hybrid liquid CPU cooling, and the system became even more quiet thanks to that - I recommend both the W0163 PSU and the ECO to anyone who wants a silent, yet efficient system.