Recently I replaced a screaming 60mm YStech 45cfm or somesuch thereabouts with an 80mm Sunon 37cfm @ 34db thingie. The sk6 is a 60mm heatsink, but due to fate and a few other things, it's possible to semi-haphazardly affix an 80mm fan to them. I will now get somewhat closer to my point.
Has anyone else tried this? Currently I have the fan affixed "diagonally" and pulling air off of the heatsink. Just wondering if it's more effective either pushing or when attached "not diagonally."