Hi Pimp, There"s 8x 120mm + 4x 80mm fans.
there all on speed control and set to slowest setting, The only very slight sound comes from the swiftech pump which is a very slight hum

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With fan speed at 1100 rpm im not to concerned about dust collection. And with dual double bypass rads my temps are = CPU 24C MOBO 35C
8800GTX"s 47C top card 51C bottom card
