I am replacing my dead video card with a GeForce 9800GTX+ and have a Q6600 quad processor. According to XFX, I need to upgrade my 400w PSU to at least 630w. I need recommendations for a good power supply. I suspect my old power supply may have caused my dead video card. Thanks for any help you can offer.
Here is a website to have a look at.... http://www.eggxpert.com/forums/thread/323050.aspx Choose from the top 2 tiers and you should be fine. XFX only lists 630W because there are crap PSU out there so they don't want law suits. I'm pretty sure a quality 550W would do unless you ever decide to SLI.
When looking for a good psu, make sure there is at least 18a+ on the 12v rail.
(you will need more depending on setup)
I recommend a single 12v rail over multiple. (multiples cost a little less but may not adequately power your system)
Try to get a unit with Active PFC which will compensate for loss of power.
Brands: PC Power & Cooling, Corsair, Silverstone. Antec and Thermaltake can be considered as well but I would go with the first three by default.
Silverion - Yes, that list is not absolute and it is subject to change and personal opinions. On top of that the updated list is from last May. However, what I found interesting was the list of links to other web sites that review and test power supplies: