Hey Reddit. I think i've discovered the peak performance of my 9950x and my KF560C30BBEK2-64 kit. I am using a b850m-tuf motherboard. I cannot get 6400 mt/s or cl26 in 6200, nor 6000 to post below 1.48v VDD. Also, vsoc and vddgs dont like to play nicely above 2200 fclk and 1.25vsoc. I tried 2133 fclk, 3200 memclk, and cl30 with loose timings at 1.28 vsoc and 1000 mv vddgs and it wouldn't post at all. I think i'm within my optimal tune at cl28 and 6200. Perhaps I could go for cl26 at vdd and vddq > 1.5v? I haven't gone that far yet. I prefer a quiet machine, but i'm mostly idling anyways so…
Any suggestions to eek out any more tightened timings, or perhaps a logical path to undervolt here? I believe vddio is optimal, anything lower than 1.38v doesn't post. I haven't tried lowering anything else voltage wise yet.
Any input is greatly appreciated. I would definitely have not made it this far without this sub's help, and many sleepless nights of course.