Quote Originally Posted by corpses3 View Post
Should I get 1mm and 2mm just to make sure it has very good contact?. I mean more pressure can't be bad right?
It's always best to get the correct size. Thicker will have more contact pressure causing the pad to spread out possibly interfering with other components air cooling path. It can also result in uneven compression of all the pads depending on where hold down screws are, and possibly a little too much stress on the components.
Having said that I believe I recall someone here saying the 1.5mm pads were a tad too thin for the application.
If it where me I'd use the .5's on mosfets and 2mm on the other devices (vrms?), and 1.5mm on the south bridge components.

John