Hello! So I recently got an i5-4670k to go with my MSI Z87-G43 mobo. I began overclocking it and noticed it crashed instantly when I saved it to 4.3GHz and it couldn't take a benchmark test without blue screening at 4.2GHz. So I was content with a 4.1 OC. I played some games and one day it just froze and crashed. I was worried (obviously) and went to check out what happened. Sure enough, my CPU was exceeding the set 4.1GHz max ocassionally by 100 GHz, and I'm assuming it just hit 4.3 and crashed. Any help or suggestions on why it is exceeding the max? PSU is 750w and shouldn't be a problem. Max temp was 73C avg of 65 at 4.2GHz under full load.