I'v been pondering the posibility of making a KryoTech like system, work on mac. For those of you who don't know, KryoTech is a company that cools chips (primarily AMD) down to about -40°C. I believe the processor has to be put into a sheath which is piped into a compressor and de-humidifier. Modification may also have to be made to the socket. I have an old 604e that I'm willing to experiment on. If I have any success I would like to do this with a G4. Any suggestions?