"Before we get into getting the kit up and running we've got to quickly some of the more major details of our testbed. On the motherboard side of things we're using the brand new GIGABYTE Z77X-UD5H. As for the CPUs, we've got both the Intel Core i5 3570k and higher end Core i7 3770k Ivy Bridge based parts. We've got our fingers crossed we've got everything we need to hit that 2666MHz DDR memory clock.
Unfortunately off the bat we didn't. We found that our i7 3770k was capping out around the 2600MHz DDR mark, a little shy of the default 2666MHz DDR. Fortunately being based out of Taiwan and creating a vast network of people we managed to hunt down a Ivy Bridge 3770k from someone and sliding it into our testbed we had that running 2666MHz DDR straight away."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips