The GT 640 would be more of a side-step than an upgrade, they are pretty similar spec wise, http://www.hwcompare.com/12941/geforce-9800-gt-1gb-vs-geforce-gt-640-ddr3/ I would at least get a 660ti or 760 if you are going to upgrade your video card. If you want an idea of what you could get for $600, here's a good starting…
Just wanting to know if these parts will be a comparable upgrade or if I should aim a little higher being on a $600 budget. CURRENT SPECS Processor - AMD AM2+ Phenom 9750 Quad Core Motherboard - ASUS M3A RAM - 4gigs Video Card - EVGA 9800 GTX w/ 512MB PSU - 600 WAT POSSIBLE UPGRADES Processor: I don't know if I'll see much…