I have my 3200cl14 8 pack kit on an x570 Taichi, r5 3600 and a Noctua DH15s, currently i can get:
3200 14-14-14-28 1.35v
3400 14-14 14-28 1.38v
3600 14-15-15-31 1.45v
3733 16-16-16 33 1.45v
now being a bit of an OC beginner and the differing opinions online i am currently sticking with it at 3400cl14 at 1.38v as i am not sure if running above 1.4v is goign to be detrimental (the RAM is advertised at 1.2-1.4v and when i input above 1.4 into my MOBO it changes to red text)
anyone better versed in OC than me care to advise if 1.45v is ok for day to day use or not? happy enough with what i have but would love to eek more performance out of it, that being said cinebench etc doesn't really seem to see much gains between 3200cl14 and the others posted above. 3600cl14 gets me about 30 point on average higher multi core (about 1%)