Ah so I just didnt how the trick for slow mode, ok. For 5ghz testing I just kept the cpu around -50, the really low cold bug was just a bug with me messing around. Now it cold bugs around -136 which is more normal temp and got better speeds aswell.
But the sticks wont post cas 6, not even at 2600. I always got 03 debug. The sticks are really good on air when doing 2770 8-12-8 twcl with 1.94v. I should try with another spd like Alex@Ro suggested, couldn't this be a good try?