DFI UT X58-T3EH8 continued - Part 2

[p2501]

I found that my problems may stem from setting the boot up baseclock. 21x200 (8-8-8-24 1600) runs fine (i.e. 25 LinX runs in the early and colder morning hours, didn't reboot to verify though, it's gotten too warm here) with that option set to auto, but if I set it to 185 to avoid the reboot at 26 issue, the very same setup bsods at the first LinX run. So what exactly changes with that bootup baseclock and how do I find out what AUTO defaults to?

[eva2000]

I found that my problems may stem from setting the boot up baseclock. 21x200 (8-8-8-24 1600) runs fine (i.e. 25 LinX runs in the early and colder morning hours, didn't reboot to verify though, it's gotten too warm here) with that option set to auto, but if I set it to 185 to avoid the reboot at 26 issue, the very same setup bsods at the first LinX run. So what exactly changes with that bootup baseclock and how do I find out what AUTO defaults to?

Depending on cpu, lower bootup bclk depending how far from target bclk will require more cpu vtt at a certain point. i.e.

200bclk target
170bclk bootup more cpu vtt than 185bclk bootup.

The optimal bootup bclk below target bclk will vary from cas7 vs cas8 vs cas9 memory settings too. For example at 200bclk 185bclk bootup cas7 might be optimally but for cas8 might be a 190-195bclk bootup bclk.

Auto bootup is same as target bclk AFAIK. As you reduce bootup bclk more, RTL values get tighter for more performance hence need for more cpu vtt. Optimal bootup bclk will allow lower cpu vtt though but still cpu dependent.