I too noticed the heat of these on my NF7-S and tried a heatsink (modified P3 slot) without much improvement. I then made a waterblock that has solved the heat of the fets and associated components in the area. It seems whatever you do someone has always beaten you to it. I water cooled mine a while ago and I'm sure I'm not the first to do it either. In a fanless system I was getting around 80°C naked, 68°C with sink, and 33°C with waterblock. For retention I also used epoxy, (artic sliver), but mixed with AS3 so it remains a little rubbery. This should allow me to be able to remove it later without ripping components from the PCB.......in theory at least, (I mounted the heatsink the same way and that came off with some gentle prying)
