WOW..EMULTRA, do NOT DISCONNECT THAT FAN..... what birdpop is talking about is he installed a seperate heatsink on it.. BUT if you unplug the fan and don't get a better heatsink, you will smell a burning smell soon....
AND NO, just having a chassis intake fan will not cool it....
try contacting ASUS and seeing if they will sned u anew version of that fan...they did a revision and sent em out to anyone who complaiend about theirs... that is your best bet....