even though it only needs 1 x16 slot, the 7950gx2 is really two 7900 cards bolted together for sli operation. thus, you'll need the nvidia sli drivers and they require the mobo to be based on an nvidia sli chipset. otherwise, you'll need to resort to hacked sli drivers.

if you're willing to live with the hacked drivers, and you can get the card for $150, it might be a good deal. but the 7950gx2 is an old card. the radeon hd 3870 512mb ($220) and geforce 8800gt 512mb ($270) will outperform it, and the radeon hd 3850 offers similar performance for $180.