Antec 300?
No no, a Coolermaster Centurion 590... although it is very very similar to the 300. Biggest difference being the hdd cage runs all the way to the top of the case in the 300, whereas in the centurion, you get a 4 bay cage at the bottom, and then 5.25" after that all the way to the top - which is why my first 5870 isn't a problem.