hello im looking for a decent low spec (512 mb) gpu (if its even possible to mount one on this board) for my acer veriton m275 g41mo7 that wont require any heavy modification or power supply modification, i am just looking to upgrade so my PC is decent enough to play borderlands the presequel, if you could send links so something like that i would be very appreciative, my budget is 20-70 dollars, thank you in advance.