Techpowerup reports Team Finland are the first overclockers that were able to overclock a Phenom II X4 940 processor to 6.30GHz with liquid helium, thereby providing proof that the extreme Phenom II overclocking AMD showed in late 2008 is indeed possible. The processor ran stable at 6.3GHz and managed to finish a 3DMark05 benchmark round.
The bench consisted of a Phenom II X4 engineering sample, DFI LANParty Dark 790FXB-M2RS, OCZ DDR2-1066 memory, two Radeon HD 4870 X2 graphics cards in CrossfireX and Windows XP. The CPU cooling employed was liquid helium, which dropped the temperature to -242 degrees Celsius. The Radeon HD 4870 X2 accelerators were set at 800 MHz (core) and 950 MHz (memory). The machine was put through 3DMark05, where it ended with a world-record score of 45,474.