Thank you for the reply. I will read on all the articles you linked before I overclock. I have a few quick questions.
1) isn't going from 3.33 to 4.5 a big jump? is it normal or is it kind of high risk?
2) I have read about XMP for the RAM, but for some reason it is not one of the options in the BIO. I am using F4 for P67A-UD4-B3, and it is not there. Does different RAM stick unlock that option? or is there anything I need to do to get it to show up? I know once I see it, I can just change it to profile 1, but it is simply not on there... Perhaps I will just wait for the new sticks to come here and see if the option becomes available.
3) Is it necessary to use AHCI instead of IDE for the harddisk? It is mentioned in the guide but I am not sure if it is just preference or it is a necessity.