Commonly, about every 3-4 years @ $200-$300. Had my BFG 7800GTX 256mb for about 4 years now, and now I just sold it last week . I built me two new rigs though . That 7800 GTX was a real beast and did very well in games throughout the many years. It still can run newer games (L4D, Fallout3, Crysis) relatively smooth at low settings, but I wanted a little more juice. I, too, probably won't be upgrading the video cards for another few more years.