This is not a study; this is not something that I would base my decisions on. Instead, it is you and, Geekapproved, crewton, Noworldorder arguing back and forth. A few quotes:
From you:
Truth be said, I see a lot more 'problems' with 1.50V RAM + SB. The link essentially says what I've stated, I too read both sets of Intel specs. I bought into the 1.65 'bad' until logic and documentation proved otherwise.
From GeekApproved:
1.5v ram is what you want for P67. You can use 1.65v ram however, but I wouldn't recommend that if your overclocking at all. Anything over 1.65v can damage the cpu.
I've not seen even one, out of hundreds of P67/H67/H61 that has a problem with 1.5v ram if the timings and speed is manually set correctly. Nor have I seen a single problem with 1.65v ram if the speed and timings are manually set correctly. However, Intel still recommends 1.6v max. Only time will tell if these overclockers start having cpu failures.
from Noworldorder:
1.65v RAM is allowable on Sandy Bridge motherboards
From above, it's basically just arguments with no evidence, except the dueling recollections from you (I've seen more problems with 1.5v than with 1.65v) and Geekapproved (I haven't seen more problems with 1.5v).
The only real assertion based on any kind of facts is this gem of induction made by you:
If you go strictly on Intel spec voltage then an most CPU OC would be impossible. DRAM Voltage up to 1.575v is 100% within spec.
After putting my nose into Intel's CPU manuals the LGA 1156, LGA 1366 {i7-900, i7-800, & i5-700} and LGA 1155 {i7, i5 and i3} ALL had the SAME "DDR3 I/O Voltage of 1.5 V" and SAME DRAM Voltage up to 1.575v.
Okay, so maybe it
was fine for LGA1156, LGA1366 -- how does that mean that it works for LGA1155? It doesn't at all, because the last time I checked, Sandy Bridge is a pretty different animal than those other chipsets.
Here's your statement to the OP, who you are suggesting risk his expensive hardware to achieve a very minor performance improvement:
However, if the RAM is 1.65v then 1.65v will be set in the BIOS. It has been proven the 1.65v is 'Urban Myth' to be harmful to P67/Z68 SB CPUs.
There is no
proof. The only way in which the thread that you linked me to proves that it is an urban myth is you saying the following in that other thread:
Therefore, this is all becoming more and more 'Urban Myth' that 1.65v RAM is 'bad' for the Sandy Bridge.
This, of course, is based on your questionable inductive argument quoted above.
To the OP:
Stay at 1.5v