Originally posted by: BlueWeasel
Just to add to Hamster's comments...
I recommend using a lint-free cloth (a coffee filter works great) to remove the old paste with rubbing alcohol. It's fine to "glob" the new paste on and get it spread around, but use a straight, flat object like a credit card, razor, index card, etc., to remove the excess and provide a thin, uniform layer before putting the HS on.
Originally posted by: DeRailur
Whats the bar none best way to put it back on, detail please
If your heatsink has a thermal 'pad' mounted on it, this pad must be removed before using Arctic Silver thermal compound. Thermal pads are made with paraffin wax that melts once it gets hot. When it melts, it will fill in the microscopic valleys in the heatsink with wax. To minimize the permanent contamination of the mounting surface with wax, the thermal pad should be removed before it is used and melted. Never use heat or hot water to remove the pad, the heat will melt the wax into the heatsink.
Originally posted by: MonkeyDriveExpress
There's a black waxy pad on the P4 heatsinks, and that is a thermal pad. I'd scrape it off and reapply your AS.
Originally posted by: BlueWeasel
Originally posted by: DeRailur
Whats the bar none best way to put it back on, detail please
Artic Silver Instructions
While the link above is for AS5, the instructions cover applying most any type of thermal paste.