The new BIOS, no core unlocking, and a drop to only two sticks of RAM appears to have settled down my Sabertooth.
I have an observation that I don't understand. When I pull all but one stick of RAM the PC boots nearly instantly. Doesn't matter which slot it is in. When I add a second stick, any slot, the boot delay is significant, 15-20 seconds. I can see all the self test stuff going on the motherboard. I assume the motherboard is struggling to identify the RAM for some reason. It always gets it right, no matter how many sticks are installed. With four sticks in the boot delay is a tiny bit longer but the system stability is dramatically impacted adversely.
Has anyone got BIOS settings that will make the Sabertooth stable with four sticks of 4GB RAM?