I have a X800 pro AGP with a arctic silencer and i also have the original heatsink. It has never been o/c as it has been pulled from the wifes pc. The silencer fan sounds a bit clicky until the fan is speeded up to around 50%.
oooooooooohhhhhhhh almost forgot to say it was really dusty

Also i have a Vantec Vortex HD cooler,
Cooler master cool drive 4
Cooler master Muskateer monitor thingy.