>> Admitted that from time to time we go to smaller yet >> feature sizes >> and lower voltages, but not much time passes and the >> Clock rate and >> density are increased and thats where the heat comes >> back! > > I don't think that's clear. Power goes up because there > are more > devices (transistors, gates, whatever you want to count) > on the > chip. The fact that this happens because the individual > devices are > smaller and that ALSO allows higher clock speeds is just a > coincidence. Ignoring any hardware proofs or disproofs [ :-) ], power increases with clock speed due to node capacitance energy loss (amongst other things) and smaller device geometries allow higher clock speeds. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist