Replacing Everest in our labs is AIDA64. This new testing suite is from the core development team from Lavalys and continues that tradition. The guys have thrown in better support for multithreaded CPUs as well as full 64 bit support. We use this to test memory and HDDs for now, but may find ourselves opening this up to other areas of the motherboard.
At stock you can see performance between the ASUS Z68 board and our P67 ROG one is almost identical with very little difference being seen. You can see that overclocked, though, performance is very strong and stronger than our other boards here because of the overclocked speed we managed to achieve.