I just bought a GTX 460 to replace a Radeon HD 4650.GTA Episodes From Liberty City ran fine with the 4650 no crashes or anything ever.As soon as I put the GTX 460 in the game started freezing after a few minutes of gameplay and sometimes crash to windows with error message "EFLC Fatal Error out of video memory please re boot".I made sure to go into safe mode and delete all the old ati drivers with driver sweeper and installed the latest driver from the Nvidia website.The only that has changed is the video card.I don't get it.Any Ideas guys?