Hi yankee! I'm familiar with bar edit

About the 266MHz problem, I find it strange, I had it running once totally stable in dual channel mode, it might be a fluke, but I do not believe so.

I have tested a little further, and can boot into windows with 266 memclk mode, but not stable yet.

It might have to do with channel clock skew, but there is quite a lot of options. I have only tested the extremes yet. My theory is that the board/bios chose the right level of channel clock skew the one time I had it stable, it was set to auto setting at the time.
I just need to find the right setting again.

Also.. Enabling tristating seems to give better stability with 266 mode (seems to, mind you )