Short Media has a neat article on Dry ice cooling and such. Tickle your senses?
it out yourself!
Riding upon the basic principle of dialectic fluid (That is fluid that is
electrically neutral) that exhibits high heat-transfer and dissipation qualities,
as well as employing solidified carbon dioxide (Dry ice), I submerged the core
components of an overclockable system in an attempt to take it well below 0°F
and overclock it.