I think it will be quiet the fan seems to be very high quality for both the radiator and on the GPU shroud. Since it will be in the shed the noise is secondary but the temp drop will be everything. Right now I'm running 1 6870 and 1 6970 at stock speed due to temp and if this works out and I can OC and multi wu process then I'll buy more. The nice thing is that they adapt to so many GPS it should be good for a long time.