Two weeks ago Team Finland pushed the AMD Phenom II X4 to 6.3GHz with liquid helium and last week AMD uploaded a seven minute long video of the feat on YouTube:
In the the Nevada desert outside of Las Vegas during CES 2009, overclockers Sampsa & SF3D from Team Finland and Pete Hardman and Sami Makinen from AMD, use a combination of liquid nitrogen and liquid helium to reach CPU temperatures of -232 degrees Celsius in order to attain CPU clock speeds of 6.5GHz and smashing the world record for 3DMarks with 45,474 3DMarks in a test.