RAM should be Hynix M die, I tried to somewhat optimize timings that I can change through UMAF (tREFI for example can't be changed in there). Pic 3 is what VDDG in UMAF returns me when I set Vsoc to 850mV and leave that on Auto, anything lower doesn't actually seem to be applied and still allows me to do 2167 on FCLK.
Tested stable in TM5, and over multiple runs of AIDA64 memory benchmark it stayed below 70ns the entire time.