What can (Unify-X, 12900KS@5200P/5000 ring):
6800-32-39-39-51 CR2 / 1.48V (46.6ns MLC, 48.1ns AIDA) - world record in air for latency for 6800-32. Constant, 100% stable. Details in the comments.
7000-xx-xx-xx-xx CR2 / you need to adjust the resistances, A.81 should work on the last BIOS
6800-32-40-40-52 CR2 / 1.37V VVDQ, 1.44V VDD, 0.9V SA, 1.08V VDDQ TX !
6800-32-39-39-51 CR2 / 1.44V VVDQ, 1.48V VDD, 12022V SA, 12022V VDDQ TX
6666-32-39-39-51 CR2 / 1.36V VVDQ, 1.41V VDD
6600-30-40-40-52 CR2 /See full review