An onboard graphics card does not necessarily prevent you from playing (I have one too). However, 512 Mb with is not very much, and if your onboard graphics card takes memory away from that as well, it means a lot of swapping will take place when loading the largest maps (such as hydlaa). My bet is loading times will be much better with more memory. About framerate, read around and you will see that there are people with real cards that have at least as much problem as I have, with the new maps.