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.