Well that can be problematic if you apply to much pressure when mounting your H&F . Taking a Prolima Megahalems cooler for example ( 790g without fans ) . That`s 1K mounted horizontally , i don`t know ... the Prolima retention mechanism i pretty solid , but over time the motherboard may suffer damage ( bending , the area around the mounting hole can yield if subjected to high pressure over time ) . Also it can be problematic for someone who changes HSF's frequently .
I may be wrong , but durability is important to me . Around here physical damage caused by improper mounting of a third party heatsink is not covered by warranty so i can't risk mounting a bigass cooler in there .
