Will this void warranty? There are no stickers over the screws so I don't see how it would be detectable unless theres a tear away section on the fan or something. I am getting 80*C max temperature, I'd like it around 75*C or less. I am planning on using Noctua NT-H1 compound. Repasting my XFX 7850 Double Dissipation 2GB netted -10-15*C reduction in load temperature. Any ideas?