jdii1215, the 901 is the exact same case as the SX1240. Antec buys them from either Chenming or Chieftec (forgot which one is the actual manufacturer).

Geeky, don't get too bent out of shape about those temps on the K7D Master L as it reads processor diode temps and not a socket thermistor temp. My Master L is presently reading 43 and 48C repectively for CPU1 and CPU2. After getting used to seeing those temps, I just don't let it bother me any more because the rig folds Gromacs totally stable. I have it running in the Chenming version of the SX1040B.

If you are looking for a bigger case than your SX1240, be prepared to pay some big bucks. Addtronics makes some large cases too but they are pricey also. They make a couple of WTX size cases (the 8500 and 8600) but they're $259 and $264 without a psu.

If you are really concerned about the cpu temps, just go watercooling. You can set up a nice wc system with that SX1240 for the $200 you are looking to spend for a new case and you can mount everything inside the case. I know because I'm using a SX1240 with my Asus dually board in a 1240. I took out the lower hd tray and mounted my radiator there, blowing out from the lower front. I mounted a reservoir in the top front of the case, but it isn't necessary; you can just use a burp tube instead.