Oof, well I was doing ok at 1.25 and 1.3, but I tried lowering them, bluescreened out of Linpack, then got stuck having a hard time even getting to bios - and if it tried to get to Windows it would complain about corrupted files.
Reset cmos, boots fine on defaults. I guess I will put the previous voltages back and be happy
As far as I know, nothing has said that VDDIO being over 1.3 is dangerous, it's all been focused on the SoC, it just felt like the auto 1.43 was "very high" - but it is driving 2x32gb 6000 c30, which might need a bit more oomph.