Originally Posted by Spectre73
Ryzen 1st gen is incredibly picky and quite unstable with DR Ram at high frequencies.
I noticed that your SCL values (at 2) are probably a no go. Increase them first to around 5 and see, how it goes. tWR is also probably far to tight. Try 24.
ProcODT should probably lowered to at least 60, maybe 53.3 ohm. But that worked for my b-die. I have no experience with AFR.
I noticed on auto it would bring my tWR up to 24, but after snooping around i saw a post where 1usmus said its not a good idea to go above 12. However when it comes to 3400 this value is way better (for me)
SCL 2-2 I was told would be better for my bandwidth as im running lower than 3200mhz and it's working fine @3066 14-16-16-17-30-38 1.41v (in the screen shot those timings were tighter than my sig, so maybe this could be part of the issue)
I did notice a lot of B-Die users are able to get away with lower ProcODT compared to most other DR and SR kits running the same'ish mhz. On these I've never managed to get it to boot using anything lower than 60ProcODT. Theres like a weird relationship where it wont boot when im near the 1.4v with ProcODT, so thats why I'm on 68.6... That being said, dropping it on 3200 works better so thanks for the heads up, nearly most settings I've tried was on 68.6 so i kinda gave up with getting it lower, until recently
Originally Posted by possessed
I have a 2400g apu and some afr. It’s really been a pain because fast means better FPS but it’s been real hard to get that. Last week it seems that I finally managed to get it pretty stable, but still not rock solid since it still crashes in one or 2 3D applications, but at least I’m no longer getting image corruption on the desktop.
So far I’m running them as 2866 with the setting from 3200 on the calculator, might try some more tweaking when I have the time.
Yeh I got these on a flash sale all i saw was 3200mhz 32gb, £110, free shipping. This was when RAM was costly, but it seems it's come down in price now
Hopefully some of these setting will get you closer to stability, you can see where I've managed to get and it helps you out somehow. From my recent experience I've found that setting the SOC closer to what my CPU defaults too is working out better for me, especially in games where the GPU is being accessed a lot. Having it lower like the calc suggests wasn't stable, im guessing the higher bandwidth was causing issues for the IMC and it wasn't keeping up?? Your guess is as good as mine, good luck though
Originally Posted by plazing
My previous Ryzen 5 1600 with G.Skill F4-3200C16D-32GTZRX (2R-AFR) got to the XMP timing (3200C16-18-18-38) @ 1.37v DRAM & 1.1v SOC and stable 1000% memtest. XMP voltage 1.35v spewed out error few seconds on the memtest.
Now with Ryzen 9 3900X I can get to 3466C16-19-19-40 @ 1.4v DRAM & 1.025v SOC (fast preset 2R-AFR). Not really confortable with voltage higher than that.
Dude, if you didnt suggest those values I'd more than likely still be doing this over the next few days
I thought i worked out a relationship between the SOC and vDIMM/VTTDDR but turns out the SOC was in the wrong place but now that the relationship is much tighter it's great, I was able to find a setting which was netting me much more consistent results. So from that point I then knew that adjusting my timings would be more noticeable.
Thank you all for your suggestions, it's shaved a lot of time off this process..