@Gopher
Your PSU is rated 330W MAX, Mhmm the GT 630 requires a 350W minimum PSU with +12@20A that being your components are not requiring a lot of juice either, I calculated something’s and I think you may be able to run the 630 but I don't recommend, The FX 5500 is a fan less card and a low powered card, chances are your PC won't boot, and if it does boot you might burn out your PSU during peak. QWIKSTRIKE offered you a 400W PSU, I think you should take it and then worry about buying a GPU. As of now your 330W +12V@17A might not be sufficient enough to run.
The PNY GT 630 witch has the VGA is a little slower than the Evga GT 630
http://www.newegg.co...orce%20gt%20630
@QWIKSTRIKE
I don't think there’s a need for him to upgrade past 400W. His PC is outdated already, won't be any point but future proofing. Also I want to add that you are a very nice person for offering him some help