Okie cheers guys. Its back at 2.5 @ 1.4v atm. as i can run that at 1:1 with my g.skill with no problem atall. My bios' voltage options are a little random and go from 0.8 to 1.55 in steps of 0.025v (i think it is). Then jumps from 1.55 to 1.65, 1.75 and 1.85.
I think i may leave it untill i get my chiller underway next year some time.