I am going to get a pretty heavy 980ti soon and thinking of ways to combat gpu sag. Then I remembered that I had a k'nex 400 piece value tub as a gift from my US based relative a few years ago. I've seen people using legos to stop sagging. Will a k'nex structure be just as good? Also what's the melting point of k'nex pieces? I heard lego's is 105°C, so it won't melt before gpu do, but what about k'nex?