Does it matter how thick the thermal pads are?

[wardo]

I'm building these from a kit and they give you exactly the number you need which of course i screwed a couple up and ordered more but they're thicker than the ones that came with the kit. Does it matter?

[unkle_psycho]

With thermal pad do you mean the sticker to attach the heatsink?

[DaveJonesFan]

Check the thermal conductivity of the pads if you can. Should be in watts per meter-kelvin.

Usually you would want to tighten down onto the pads well in either case to create a bit of pressure on the pads.