I've been having problems with my new XFX 5770 card, while playing any source game(I've tried Garry's Mod and Half-Life 2: Episode 2) I will experience a graphics driver and/or even a full game crash. On both OSes installed on my system, Vista and Seven, I've done driver sweeper in safe mode and installed the latest ATI drivers.
Because of this I've made too options avalible to myself via XFX support tickets, Send in the 5770 and receive a(hopefully fixed) 5770 back, or get their GTS 250 card. My previous card, a EVGA 8800GTS runs the games without issue, as does a EVGA 7600gt used by a friend of mine.
Keeping all of these things in mind which option do you guys think will solve me problem? I'd love to experience a proper 5770 experience but I'd easily take the GTS 250 power differance over the crashes.