dude! 13c idle! how cold do you have it in your room?
why not jump to 3.6-3.8ghz? (since you have such good temps)
and no waterblock is out for this board! but 33-35c is nothing on a motherboard
I just hit 3.60 @ vcore 1.39 (pencil mod) I mean that board is very very stable then b4 and the idle & load on that setting look: