1. Vantec from ZipZoomFly (formally Googlegear) offers "Stealth" (their name) case fans in all sizes - the 80mm run at 21dBA, the 92mm at 20dBA. The 120mm jumps a bit to 28dBA - still not bad. And they offer volume discounts - the 80mm fans are $8.99 USD each if you buy 5 - 9, $7.79 each if you buy 10 or more. I have 4 PCs in my home office so I bought a bunch and have been going through the PCs, cleaning out dust bunnies, and replacing the fans - and it makes a big difference (found a locked old fan in the process). 2. Concur with using Zalman stuff - the CNPS7000ACU HSF is awesome - uses a 92mm fan and runs at 25dB full speed! Warning! HEAVY - Stress on MOBO if system bounced around. They also make a silent video card cooler - my next purchase.
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Added not about ZipZoomFly - Free 2 day shipping on those fans! And no, I don't work for them - but they get a lot of my business.
1. Vantec from ZipZoomFly (formally Googlegear) offers "Stealth" (their name) case fans in all sizes - the 80mm run at 21dBA, the 92mm at 20dBA. The 120mm jumps a bit to 28dBA - still not bad. And they offer volume discounts - the 80mm fans are $8.99 USD each if you buy 5 - 9, $7.79 each if you buy 10 or more. I have 4 PCs in my home office so I bought a bunch and have been going through the PCs, cleaning out dust bunnies, and replacing the fans - and it makes a big difference (found a locked old fan in the process).
2. Concur with using Zalman stuff - the CNPS7000ACU HSF is awesome - uses a 92mm fan and runs at 25dB full speed! Warning! HEAVY - Stress on MOBO if system bounced around. They also make a silent video card cooler - my next purchase.