The Thermaltake is okay, but barely, you could do better in my opinion. Seasonic, Corsair, PC Power all have good reviews in general. Look for 80+ cert and a good 12volt rail/s ( 30+ amps total min), and between 450-650 watt range when picking out a powersupply for your current system. I would go with a 500 watt or more and 600 + if you are thinking about SLI in the future. Your 8800 GTS wants a powersupply with 26 amps min. That means the 29 amps on the Thermaltake you selected doesn't have much headroom there. I would like to see 35+ amps on the 12 volt rail at min to be safe.
Here are a few poweresupplies in the same price range:
I bought mine based upon Anandtech's review, but though Jonny Guru only gave it a 7.5 out of 10, it's been a good model, built by Seasonic.
Just never open your PSU like they do. They know what they're doing. There are no user serviceable parts in a PSU.
My general question for the thread:
I'm considering upgrading to 750 or 850 watts just before upgrading to a Phenom II 920 or 940 (haven't decided which) and a 4850x2 or a 4870 1 gig (haven't decided which is best for 1920 x 1080 gaming on an Acer H213H 20.5 LCD)
I'll use the same motherboard as it has a bios that supports Phenom II
Just not sure if bronze certified makes any difference. Does anyone think I don't need to upgrade the PSU? I'll play "musical PSU's" and move the 650 NeoPower to the next PC down and retire the oldest (by a year) 550 watt Truepower as an emergency backup if I do upgrade.