MARS really is quite a sweet board now bios is mature

[Cronos]

I already tested in OS with 2V and tighter tRFC, the point of the test was to map out the effects of tRFC VS voltage. Also the new memtest is quite brutal Vs the old one and im confident I will be close in vista with the voltages I saw in memtest.

Not brutal enough. I can easily pass memtest86+ 2.0 at 1000MHz with my G.Skill PC8000, but Linpack errors out even at 980MHz.

And i hope you are talking about many-hours testing in memtest, at least 10 full passes.

What i have found, with this memory you may be getting really seldom Linpack or memtest86+ errors, but to totally get rid of them, you may need
to lower your frequency quite a bit.