1mm pads on the square silver chip between the two gpu cores (some sort of pci-e splitter?) and the long "CPLA-3-50" chip and small boxy chip up on top of the card. The VRM's and RAM use 0.5 mm thermal pads.
also i recommend the fujipoly pads too.
Ya, but what do you know about
5970 thermal pads?
Considering thats MY thread and I personally checked it for myself and own 12 5970's, I know enough to know what I'm talking about.
I followed this guide myself and it was brilliant. The previous owner of my 5970 had removed the heatsink to replace the fan, and didn't re-pad. It was a total mess. Shredded/missing pads. Bad job on the thermal compound on the GPUs.... nasty. The card was hot and unstable which led me down this path to begin with.
I used the 1 and 0.5 mm Fujipoly pads from frozencpu on all the various points and just ic diamond on the gpus. Been running the card at a tiny little OC 735/1100 with temps at 70ºC for weeks now.