Using multipliers, we managed to get 3.5GHz out of the CPU without much trouble. However, due to time constraints we didn't get a lot of time to push harder. This we are going to cover very soon in a dedicated article where we test both the 955 and 965 overclocking potential.
Important Editor Note: Our maximum overclocking result is the best result we managed in our limited time of testing the motherboard. Due to time constraints we weren't able to tweak the motherboard to the absolute maximum and find the highest possible FSB, as this could take days to find properly. We do however spend at least a few hours overclocking every motherboard to try and find the highest possible overclock in that time frame. You may or may not be able to overclock higher if you spend more time tweaking, or as new BIOS updates are released. "Burn-in" time might also come into play if you believe in that.