Good cooling and quiet is difficult to achieve with 80mm fans but it can be done. There are a number of high quality, high efficiency fans on the market from Zalman, Antec and Panasonic. They usually need to be combined with a fan speed controller such as the Zalman Fanmate to be really "silent". The cost can add up. Antec has a new line of fans that include a 3 speed switch and are reasonable in price. It may be cheaper in the long run to get an Antec Sonata II case and transfer you PC components to that. (That is exactly what I did recently.)
I have a Zalman CPU cooler, Arctic Cooling VPU cooler and an extra Antec 3 speed 120 mm fan in an Antec Sonata II case. The CPU fan is slowed slightly by a Zalman Fanmate controller. The result is a very quiet computer with cool case temperatures, even with moderate overclocking. Considering I have 4 hard drives, 2 DVD drives and an ATI 9800 video card, the results are quite good.
Last edited by I_Want_My_HDTV; 2007-01-24 at 01:14 AM.