I just did another cpu change and decided to a little more permanent solution.. I put a penny instead of the cardboard. I still have a little play when I twist it but overall my cpu temps have dropped over 5c with this particular cpu. I honestly think the cardboard was a better solution than the penny cuz I wants able to twist the hs as much before. Either way this is working quite well.
Edit: As you can see the hs is not totally level in this pic but I have fixed that now.
Edit2: Resized for the complainers out there
Bookmarks