Ok so ive got a heatsink below on my mother board below my CPU cooler and heatsink and I was wondering when I point a fan at it is heats up and when I turn fan of within a few seconds it drops a few degrees Celsius I was confused for a while but then I though a heat sink disperse heat in air by pointing a fan at it im preventing the heat from escaping as its pushing all the hot air back at the heatsink am I correct with this assumption