The 8x00 lower-midrange series underperform compared to the dx9 cards out there for the same price. Unless your looking for HDMI capabilities and such, it's not recommended to buy a low/midrange dx10 card.
7600gt, not sure if it comes passively cooled, I know the 7600gs does though, doesn't run to hot, and is of course very quiet. It also should come fairly cheap, and still perform decently-ish in games, don't expect to be running stalker or something like that on high, at resolutions past 1024*786 😛