I am running Tiger on a 450MHz Cube, with 1.25 MEG RAM, a 32 MEG RAM ATI video Card and an upgraded Hard Drive. It has run solid as a rock. Now the question. Has anyone installed an Apple dual 500 MHz CPU? into a Cube? If so, can you tell us about it? Success or troubles etc. I have such a CPU and would like to use it in my Cube. I THINK I'll have to do something to increase the cooling capability, but beyond that I haven't a clue. Thank you in advance for your time and your thoughts. Happy Thanksgiving, one and all! Gary