These are great fans. These are the same 120mm fans that come with some (all?) Antec cases. I added them to my Antec case. I've heard of special expensive fans that are very quiet for overclockers, but I can't imagine fans being quieter than this one. I bought them for about $6 and can't even tell they're on. My graphics card is the noisiest set of fans in the system, including my Corsair CPU cooler with heatsink.
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