Q820a405 seems good. VID=1.200

I only did quick checks on air with 1m, but it seems to love low v. Could boot and run 1m @ 4ghz with 1.15v, probably less but I was looking to go up. Temps were normal & scaled well and together exactly. No problems at all with max v on air. I went up to maybe 1.56v where I decided to wait for cold and experienced no problems whatsoever.

Cold coming soon, like tomorrow lol.