Its phase change cooling at -34c idle and -26c load (see red LED in picture), the phase change I want to get though is good for -70c and that might get me 5 GHZ with my old P4.
Check this out and you will see some people have got to -150 and thats cooooold.
http://www.xtremesystems.org/forums/...ad.php?t=97568