R3900x supports various memory clock speeds depending on the configuration.
R3900x supports various memory clock speeds depending on the configuration.
in my setup i used an r3900x with 32gb (4x8) Corsair Vengeance RBG cards at 3200mhz for a week after installation. during that time i experienced strange crashes. after troubleshooting with multiple DMP files and research, i traced the issue back to my memory. it seems like my RAM sticks might be the problem—swapping them all works fine. i tried different configurations and everything functioned properly. i checked the R3900x wiki and found it can only support 4 dimensions at 2933mhz or lower. i reduced ram speed and continued using it for about six weeks. later, i watched a video showing stable performance without crashes. i’m wondering if i went too cheap by throttling my RAM, or if the chip itself couldn’t handle 3200mhz.
The specifications from AMD are outlined here. Exceeding these limits is regarded as overclocking, and AMD isn't liable for crashes beyond that point.
SoC stands at 1.1V. I've adjusted mem to 1.35, 1.4, 1.45 and 1.5V, but lower voltages fail after about ten minutes while higher ones only fail when under load.
If you're experiencing these issues, it might be related to the backlighting components. The Corsair Vengeance 4x8GB with 3200Mhz RAM seems fine, but the blue screens could stem from the dimming system. It's possible the same problem exists with other models, though they lack RGB support. Checking the memory compatibility list might help clarify if your model is listed correctly.
I've encountered the same problem with my Ryzen 1600. My setup includes a G.Skill Ripjaws 16GB 2x8GB (16GB) 3200mhz system. When I enable the XMP profile, it causes random crashes and blue screens. Up until now, it functions properly only when manually adjusted to 2933mhz.
I was thinking about that board or something similar until I learned about its limitations in certain situations (meaning only for its original purpose). With "Auros and me" I'm using my old MSI B350M, 3200 Corsair RAM @ 3200 MHz... I'm actually planning to upgrade to around 3400. Also, AMD suggests a minimum of 3000 for Ryzen, but 2933 isn't quite that. I might return the motherboard too, and it seems odd to point the blame at the RAM when it's probably the hardware issue. Imho!!! @Xiee which RAM do you have? And are you sure you chose the correct XMP profile? Usually it's XMP2, though not always. My B350 had two different profiles before I updated the BIOS; when I tried XMP1 it crashed right away, but XMP2 worked fine. Now with the updated BIOS, both profiles match, so I don't think it matters much, though I'm still using XMP2 just in case.
I'm not a bench master, so lowering the memory speed won't impact me much, but removing all my RGB and AIO components to install a motherboard that only limits me isn't helping. It's working okay now, though. With Jurrino's voltage tips and some troubleshooting on my end, I couldn't get my RAM to hit the advertised speeds without crashing. I'm curious if others are having to slow their RAM down or if Linus managed to run it at 3600 through some mysterious means. Did you try adjusting the voltage? According to the same wiki, you're only able to reach 2666 MHz according to AMD.