FUD Zilla reports a Intel Nehalem 2.93GHz engineering sample overclocked to 4.11GHz on air does Super PI 1M in just 9.969s.
The chap managed to overclock 2.93GHz Engineering samples to a whopping 4.11GHz on air and he increased the voltage to 1.576V.
They set a multiplier to 31 and he got the final score of 4112.7 MHz and this is probably not the last stop when you overclock by air. The normal multiplier for 2.93GHz Nehalem is 22 times and you can see that the CPU has four cores and eight threads, 4x256KB L2 cache and 8MB L3 shared cache.
The CPU was stable at 4.11GHz and it finishes super Pi in just under 10 seconds, 9.969 to be exact.