btw, I did buy a few years ago on ebay a x800 card with 2 dvi outputs, and also played sometimes with matrox cards because I wanted always much digital outputs and opensource drivers and the r300 driver was long time on a better state than the r500 drivers.(or was there another name for it I meand >= x1xxx cards and they were kind of more power efficient I believe. So yes I bought mainly for open source drivers older hardware when I think even x2xxx cards where out. So but because x800 cards did not support some dx9 features with blur or something what nearly each game at this time did use I someday moved on to a newer card and because this opensource drivers gets better.
But now I did stop try to make work all with one computer, I stop trying to get a power-saving and gaming pc in one. I think I will end at with a zacate powersaving pc with digital grafics output maybe a notebook ( lenevo x121e ) for all but gaming. and some kind of a gaming machine, important point is that on both s3 (suspend to ram) works so I can connect both of them on my 26" monitor. the notebook with only linux and the gaming machine only with linux and open drivers. So my dual-boot-system switches os with a 2 second wakeup of the sleep modi and a 1 second switch of the monitor-input