Atholon 64 Cool'n'Quiet
There is a feature on Athlon chips for reducing clock speed when the processor is idle so keeping the system cooler and using less power.
There is a kernel module to support it but presumably other things need to be done to get it working. For instance gentoo pages describe a file /etc/conf.d/cpudyn with
Does anyone know how to do this in Slackware? I doubt if just enabling it in the BIOS is sufficient.