Our in-house mad scientist and 'Stig' like personality under codename Bodar recently picked up a Hexa-core / 6-core Xeon based processor. With Intel's Gulftown in close vicinity we therefore asked Bodar to show some performance numbers and then poor a few liters if Liquid Nitrogen on the processor to see how deep it will go.
In a video Bodar will take you through some low-level game benchmarks to show performance differences in-between 2-4 and 6 CPU cores. Then he'll use liquid nitrogen on the setup and will take this hexa-core processor towards 5800 MHz with Hyper Threading enabled. He ended at 5724 MHz with a stable PI score and for the Futuremark benchmark sessions roughly 5400 MHz on all six cores. You can check out a little video on this experience Guru3D.