Even the 40mm fan I have fitted gets quite noisy so I have been looking at alternatives. http://www.dx.com/p/jtron-40210020-dc12 ... 8OwgLHDVH0 This is very quiet. It would direct a much stronger airflow but just on the lower fins of the heatsink. Does that seem workable? I thought I'd ask first as it is a fair bit of fiddling around to mount it.
The first fan that came with my first v5 was quite noisy. I just checked the one that came with the v6 and that is much quieter. Looking at specs it is rated at 30 dBA. However the centrifugal fan has approx double the airflow and that airflow is far more directed.