That needs some serious power for such a small card!
I love SFF cards, but personally, the 560GTI was not that long anyway so lopping off an inch is hardly worth it. While it does look lovely, it would have just been nicer if they could have lopped off an inch or 2 to a 570 or 6950 instead.
It's also a pity it has taken the best part of a year since the release of a card for it to be made smaller. I can see most people thinking - why buy this card now, when in a few months we can get a 6 series that will fit in my case, draw less power an probably be a single slot card that is pretty much the same spec.