I just ordered the GTX285 - it had data in the specs as to the length of the card - I have a full-size tower case, but not a server case. I remember it being amost impossible to get my last card into the case - I've looked at these cards and find that the length data is just not given.
Has anyone had problems with the length of these cards? Which do you think is the most "compact" card?
Those are GPUs, not cards. Third parties use the GPUs to build their card offerings, so you'll need to look at the specs for each individual graphics card manufacturer to find out how long the cards themselves are.