[citation][nom]Crashman[/nom]Actually, our engineering contacts recommended 1.40 to 1.45V for Sandy, and we only stepped down to 1.35V when a bio* board burned a CPU around 1.40V (apparently due to increased voltage during BIOS initialization). And the 1.65V memory thing...it was all about the difference between the memory controller and memory being less than 0.50V so VCCSA at 1.15V supposedly solved the 1.65V reliability issue.[/citation]
It's not that I 'think or believe' the IB is going to degrade with 1.3Xv+ vCore voltage, it's the thermal limitations to most folks HSF selection that's the limiting factor.
I still then & now felt/fell the SB thoughts of 'greater than 1.50v RAM is going to fry/burnout/destroy/etc the SB' was a MYTH. In the forum I went along with it, but in real life -- folks want high performance RAM i.e. higher frequencies than DDR3-1600 -- so I gave it to them and the kits sure were above 1.50v. Your choice of 1.60v RAM simply made me think about that issue.
To clarify, my point was since both the SB-E & IB clearly can handle 1.65v RAM ... so could (can) the SB ... and it was/is a MYTH. Stability, sure increase the VCCIO to 1.20v which in most cases correct many stability issues. Ditto with SB-E, VCCSA to 1.10v~1.20v and match the CPU VTT to the VCCSA.
However, IMO don't exceed 1.25v (VCCIO, VCCSA or CPUVTT).