well i have an amd x2 processor in a geforce 6100m-m and i was thinking of getting a x1900 for it. is this a good choice, or should i get an nvidia graphics card instead? is there any difference when using an ati card in an nvidia type mobo?
The most important things would be the combined amperage on +12v rails. 18A+ would be the minimum. & the total wattage of the psu. 350W+ minimum.
Google "CPUZ" & post the mobo brand & model. It looks like it has onboard nvidia video. I assume you've disabled it, otherwise, there would be ati & nvidia drivers running. Your video card is X1300. Not for gaming. Does it answer your question? You're running an ati card on an nvidia board no problem.
Personally, I would get at least X1950PRO for DX9 games or 8600GTS for DX10 games. If you can afford it, HD2900PRO or 8800GTS320/640.
you will not have an issue running an ati card on an nvidia mobo (no one would buy them if that was the case) the 2900 pro and 8800 gts 320 would not be bottlenecked AT ALL by your cpu and also I think they are better value for money, but an x1900 xt is still great for dx9