Better don't use epoxy! You won't ever get it off again, I guess.
There's silicone glue that can take high temperatures. You should be able to get something like this in shops selling stuff for work on cars and other type of machinery or a fireplace or whatnot.
This product says up to 230 C (450 F), so would be good, I'd guess: http://www.amazon.com/Permatex-81158-Silicone-Adhesive-Sealant/dp/B000AL6WLA/
Buy something that's black and it will look just like Intel's original glue.