Just set the timmings to the specs of the RAM so just set them to 9-9-9-24 in the BIOS, should be under RAM timing control or something similar to that.
CPUZ sometimes gives wrong readings the MSI Tools should be the more accurate. As long as it's stable you shouldn't have any probs though.
Your temps are ok as well, my core 3 is 4-5 *c hotter than the others idle but on load all cores are the same except core 0 which is cooler by 4-5 *c
I've noticed quite a few people that have one core hotter or cooler than the others though.