Coating the silver with acrylic would kill the ability to transfer heat. I've thought about this a bit and if the brittle tendancies of the graphite can be canceled out then it would make an amazing conductor. Diamond has a thermal transfer that is 5 times that of copper so graphite should be pretty close to that, atleast better than copper. OCZ's use of graphite will be very intersting to see, we might see a change in the industry from copper to graphic on the CPU interfaces.