I would go for the PCPower&Cooling 750 Silencer quad over that Rosewill PSU any day.
http://www.newegg.com/Product/...x?Item=N82E16817341011 The cost is the same before the rebate, and that is probably the best PSU you will find for $150. The Rosewill may not be bad, but they haven't quite proven themselves to make a solid product consistently IMO, like PCP&C has.
The GTX should fit in the 900...
btw... just a bit of advise... You really shouldn't do what you've done with this thread. Earlier the the first post was about a GTX and a PSU, now it's about a GTX and an Antec case... It makes the thread very confusing to anyone who stepped in after the first post was changed because it looks like everyone is answering the question incorrectly. Just add your new question as a new post in the thread or if the new question is completely off topic, start a new thread.