Basically an 800D but with a lot more rounded edges and whatnot! I'm not so sure about the side panels opening up like that, since one would need lots and lots of room to open it up all the way, as opposed to just popping off like the 800D. One glaring mistake is the lack of grommets for cable management directly below the motherboard, like in the 800D. Also 13 hard drives is overkill. This case would not fit under my desk where my 800D currently resides. As well the motherboard is situated too far up inside the case, and there isn't enough room for sometypes of WC options.

(HxDxW weight)
800D - 24"x24"x9" 44lbs
Cosmos II - 27"x26"x13"47 lbs (holy crap 13" wide)

http://www.techspot.com/review/541-cooler-master-cosmos-2/page1.html