ok, I used to do electrical work on mostly commercial jobs and sometimes we had to use a fire chaulking material on any firewalls. It's like 1/8 an inch thick and comes in 6x6 inch pieces. It's highly cuttable and morphable to any shape and sticks to most surfaces including flat metal. Now I believe it's non-conductable since it's in proximity of electrical circuits. What I'm getting at is I just got an idea for isolating the heat that comes off of the back of GPUs. If fully applied it will either absorb the heat and leave the inside of the case cooler or it will trap the heat and make the graphics card hotter. Any takers to this challenge?