Nordic Hardware is saying that the OC Team Italy has taken a Pentium 4 631 and, with the help of volt mods and LN2, hit the 8GHz mark. Thanks to Brian B. for the linkage.
OC Team Italy had unpacked it golden Pentium 4 631 to throw some liquid nitrogen on it. With a non-modified ASUS P5B motherboard they managed to reach a whopping 7520MHz, but pointed out that the motherboard made it impossible to go any further. Now that they have once again mounted the copper pipe and made the necessary voltage modifications, the liquid nitrogen once again did its thing and made it possible for them to finally reach 8000MHz!