Now, I may have more or less answered my question in the title. But hear me out.
2GB RAM (Bought in 2007)
ATi Radeon 5770 HD
AMD Athlon 64 X2 5600+
Asus M2N32 SLI Deluxe Motherboard.
Christmas is coming, and I would like to upgrade my computer. My main gripe with the damn thing is that everything is monumentally slow-new games run just fine with a bit of tweaking, and look good enough, but if I want to alt tab to skype or firefox, I might as well go grab a sandwich or something. Should I get a new processor, new RAM, or both? My budget is around 120 dollars.