One of my systems is a slot A motherboard with an Athalon 1.4 ghz on it. Looking for a heatsink/fan to replace one that died. I am also replacing a fan on my primary system which is a 939 board with the x2 3800+ CPU. The x2 3800+ came with a stock heatsink/cooler....Anyone know if it will fit on the Slot A board and be strong enough for the older Athalon 1.4? Thanks.