if you dont mind playing older games the gt240 is fine. it will handle stuff like oblivion and fallout 3 quite well, some older fps like crysis/crysis warhead on low settings, bfbc2, farcry 1/2. 2gb ram is going to be a problem, dont know why your running windows 8, windows xp would be best for that PC. gtaiv will run at low settings, i used to run it on an 8800gts 640mb fine (which is similar to gt240 in performance) but your cpu will more of a bottleneck there and your ram is not enough, at least 4gb is a minimum for that game to run smoothly. it will still run pretty poor due to your cpu though, if you can OC your cpu to at least 3ghz you stand a better chance, but since its an Acer, overcloking will be limited. So basically, stick to older games if you really want to follow through with this and get at least 4gb ram.