I am building some sandy bridge systems with i72600K's and i5 2500K's using MSI GD55 and GD80 MB's.
I am looking at ram and reading a whole lot of people claiming that 1.5V is the max you can put into a sandy bridge. I have found absolutely no official release from intel or any reputable testing site to support these statements. I have however found that intel states sandy bridge can handle 1.35-1.8V on ram and you do not need to keep the VTT and ram voltage with in any margin from one another.
I have ran 1600Mhz kits on 1156 systems at 1.8V during over clocking and not had issues. These will be my first sandy bridge builds and i want to hear what issues people are having with them and where the hell the idea is that you need to use 1.5v ram. i have never in my life used DDR2 or 3 at 1.5V its always been 1.65.