So I was playing some TF2 today, and bam - suddenly locked up. About five seconds later, this happened: My card is a three year-old G80 8800GTS 640MB and the heat it generates probably was its undoing. Currently, I'm thinking about an ATi 5670 (1 / 2) seeing as I mostly play Source games and 2D shooters that aren't graphically intensive at all. I'd really appreciate any input and I don't want to spend over £100, seeing as I've just paid for a new phone line + internet. Also of note: I've been having the problems with lockups but no artifacts for 6 months now, but I wrote it off as bad drivers. However, I upgraded, downgraded and upgraded again today - lockups with artifacts persist in TF2, Oblivion and Stalker, but they seem to be more frequent on 197.* versions of Forceware. Cleaned out my card a week ago and high temperatures plus crashes still occured, so I think it's definitely time to get a new GPU. Oh, and my resolution is 1440x900.