Overclocker Shamino has overclocked a sample of Intel's 32nm six-core Gulftown processor to 6.4GHz with LN2 cooling, you can check out the results at Nordic Hardware. Pretty impressive considering that the launch of this product is still months away from us.
Using liquid nitrogen and a pretty terrifying operating voltage of 2.02V all six cores were clocked to nearly 6.4GHz for a quick screenshot.
With the cores clocked at 5.9GHz the system completed one round of 3DMark Vantage Performance to measure the CPU performance. The result was 51,177 points, which you can compare to the CPU score of the current Performance Profile world record at 32,328 points.