I don't overclock but i do play for hours, as well as my girlfriend's 3 or 4 hour stints on Star Wars and Tranformers. Hence the reason for the fans, i live in the desert and it gets hot as hell around here. With the AC on its ok, but not as well as i like. Got some more work done, i mounted a crossflow fan to bring in cool air from the bottom of the front panel. Cut out a section of the 120mm fan port and mounted it sitting at an angle so i could fabricate a port for the air flow. The air brought in had to be from a small port about 1.7 inches long and .5 inch wide! the fan itself is about 3 inches long (give or take a few cm) so the fabrication took a while, made completely from the hard plastic that all my pc components came packaged in! I also added a 120mm on the side panel with an 80mm-120mm adapter, a 120mm on the back with dual blue cold cathode lights. I changed out the old ass IDE cable with a lit up round one, gonna paint it, get a 750TX corsair psu and give it to my 10 year old son Roberto. This was mt first attempt to mod and upgrade a pc except that the mobo only reads X8 on the pci-e slots, it can't take DDR3 ram, and it's maxxed out with the 6000+ 95 watt AMD dual core 3.0Ghz cpu. My next rig is gonna be sick........