the settings that ryzen dram calculator shows does not work in new bios

[Rock N Roll Rebel]

I have a crosshair vi hero and I updated the bios to 6301 from 6201 before all my bios settings worked from ryzen dram calculator but in the new bios the settings won't even post so I used docp and that is working

 

[Athlonite]

how much of a difference is there between RDC and DOCP settings also you'll find AMD struggle with 4 dimms installed 2 x 16GB DDR4 dimms would have been better and much more stable

 

[robot zombie]

I've heard a lot of that. RAM compatibility really is a huge mess with Zen and Zen+. Just nature of the beast. Could be any number of little "negligble" changes to blame. Likely all you can do is roll back and hope it's better with the next one. Asus has a reputation for having problems with memory overclocking due to jacked-up firmware. Some people started off worse and got better. Just as many have lost their overclocks after updates that fixed problems for others. It's a mess.

And yeah, like Athlonite said Ryzen really prefers 2 DIMMs over 4 any day. The IMC struggles a little with 4. Too little too late, I know. But point is it's temperamental enough that little, seemingly insignificant things can be enough.

Just be glad you can get your DOCP settings to behave. Mine won't even post on DOCP standard on my Asus Strix X370-F. It runs two full stops below rated speeds at most

Ryzen DRAM calculator can't account for everything. Perhaps the new firmware's behavior changed the working parameters outside of what the calculator had in mind. Either my IMC is really bad, or the mobo is, because none of the timings it's given have remotely worked. In a lot of cases it's really, really off. With my current config it was actually pretty close, though. I'm not far off from what it gave me. All you can really do there is play with timings, voltage, and maybe termination. Maybe it's just a little thing, you know? Probably best treated as a starting point. Too much variance in hardware/firmware.

 

[Rock N Roll Rebel]

hi, I just got back but yep I agree with you guys however I wanted 4 stick because i"m a fool for RGB lol so i make it work. the first ram i got was g-skill trident z RGB but one stick was dead so I got the corsair vengeance I know those are even less compatible but at the time of buying them there was not much RGB ram out there