The chap used an AW8D-MAX board, powered with Intel i975 and an ICH7 Southbridge and managed to reach such a high clock. The company used Corsair PC6400 memory working at 5-5-5-15 at overclock time.
The chap must have used some super cooling such as Asetek Vapochill but we don't yet have the deatils.
You can find more about it here. µ
Sign up for INQbot – a weekly roundup of the best from the INQ