I assume you mean this: http://www.antec.com/Believe_it/product.php?id=Mw==
Looks pretty good. I was looking for something a little more square, but this looks like a great alternative.
This build is meant to replace my existing build, which is about six years old now running Windows XP SP2. This new build is meant for general purpose and I would like to start playing some games on it (maybe not Crysis 2 or CoD MW, but something close).
Just so you know, Crysis 2 was built to be runnable on console hardware (which is about 5 years old now), and CoD:MW wasn't that stressful when it came out a few years ago. Its successors don't seem to be pushing requirements much harder.
Given your selection of hardware, I'd say you could run both fairly decently. The worst you'd have to do is not run it at max settings (though I suspect you might be able to max out the settings for CoD)