Well, I set them all to the lowest values. 1.20vfsb, 1.25vmch, 1.5vsb, 1.057vich, etc.

However, although that let me run memtest86, windows wasn't stable.

I bumped to 1.30vfsb, 1.40vmch (actual 1.50v), but it still wasn't stable. I then added 1.6vsb and 1.215vich and so far so good.

I've got my vdimm pencil modded so that stock 1.8v gives me 2.18v.