I'm not willing to drop $500 on a card that I know will be $100 - $150 cheaper in 2 to 3 months but, the local shop I frequently make purchases from had one in an Antec 1200 case. Putting a 120mm fan directly below the card blowing up to the 240mm in the top of the case dropped the max temps from 93c to 77c while playing Crysis.
No idea as to what the card's fan was set at or the specs on the 120mm fan speed though... forgot to ask. Couldn't really comment on the noise either as there was quite a bit of other noise in the store. If I can get 1 to run at those temps I'll be fine with that, that's right in the 8800GTX ball park for temps and a single card solution is what I'm looking for.
I can't imagine running SLI with these things without either water cooling or having the window open during a Wisconsin winter. Tri-SLI might require both