yeah its an antec 900!!!
thanks alot for the comments. the radiator is mounted on the top in front of the 200mm fan at the top, and has a 120mm fan helping push air out the top...
OC'ed at 3.7GHz and running at about 35C steady, about 42C under load. RAM runs very cool with the corsair dominator RAM cooler and heatsinked RAM (DDR3 and 1333MHz)
2x eVGA Superclocked GTX280s in SLI on a eVGA 790i Ultra FTW edition motherboard!
2x 150GB Raptor Drives in RAID0
UPDATE:
also, i bumped down the OC just a bit to 3.4GHz to get it a little more stable,been running OCCT for 4 hours so far, at full load it has a max temp of 57C for ~2secs.. i also bumped the RAM up to 1360 MHz and not a single hiccup, ran some mem tests and WoW (very memory extensive) and i can notice a difference in just the few MHz