Overclocking P4 660 to 6Ghz and new 3DMark WR
 

Robert "Crotale" Kihlberg reached 6GHz at DreamHack Winter 2005 with a
Pentium 4 660 (3.6GHz) using a compressor cascade system keeping a
constant temperature at -100C.

Link: http://www.nordichardware.com/news,2518.html

Marcus "Kinc" Hultin and legendary Norwegian overlocker Overklokk managed
to set a 3DMark 05 world record using a compressor cascade system reaching
18517 points.

Link: http://www.nordichardware.com/news,2519.html