Thanx for all the replies. It seems 4850 is the fastest, but maybe thats too slow, and i better give up the x-fi and install a gtx 295. But it was my impression that the eax 5.0 effects from x-fi was really worth it i.e. true 3d positioning sound in headphones etc. Any opinions on this?
will the gtx 295 run in the newest shuttle with a core i7 2.9gz and 500 w psu? It would be a killer set-up!