Something needs to be cleared up, slapping an 80mm fan on a heatsink will not always give better performance, due to the fact that there is a bigger dead spot over the CPU die, since the motor is bigger. Cyke138 has a decent idea since he incorporated a side fan, but I think it would be better off without the 80mm. I myself am using 2 40mm fans side by side on top of my taisol, and it cools around 5-7 degrees cooler then the stock fan, and it's quieter.