jellowiggler

Stick with the 1:1 ratio and 3600. Go with low CAS latency like 16 if you can. Over 3600 is diminishing returns on Zen 3.

I have a similar issue. I have a Ryzen 5600x system on a x570 MB with a Radeon 6800 XT. Everything stable since a built the system in Nov and had to run with a GTX 970 for graphics while I struggled to find a GPU. I bought my MSI Gaming Trio X RX 6800 XT and was so happy, until I started playing my primary game. Elite Dangerous. It reboots the whole computer when I try to jump to another system. But the reboot isn't successful. It halts with a video error on the diagnostic LEDs. I have to power down, and restart to get it running again. When it does restart it has a warning about how the card doesn't support UEFI and CSM must run. That isn't true because before the fault happens it boots to default just fine. I have tried 2 more recent drivers, 2 most recent BIOSes for my Stix E-Gaming x570 board, leaving the DOCP settings off the RAM, etc. I have no overclocking or tweaking. Everything stock. System was completely stable before the RX6800XT. The common thread here is AMD GPUs. RDNA and RDNA2 based. Same drivers. I thought I had an answer when the problem seemed to stabilize when using the game in fullscreen mode vs borderless mode. No good. Still crashes. It's not every time, so it's difficult to see without playing for a while. I'll make 6-7 jumps and think I finally got it! Then it will crash 3 times in a row.

I have a few questions as I just went through some of this. 1. Is the ram you bought on the qvl for that Motherboard at the speed and density used? 2. Check what voltage you are supposed to be running the ram when running at that speed. Look at the vccsa and ram volts spec'd in the xmp profile. The vengeance ram I am running right now in my x79 system is on the qvl for my board, but only in up to 6 slots, not 8. I have to run it at 1.55v ram, 1.15 vccsa to be stable at 1600. I can run all 8 sticks at 1333. Your ram is probably ok. test it with memtest at +.1v, +.1v and see if it stabilizes. if so try at reducing your overvolt a bit so you can find the optimal configuration.

This post is still excellent. LLC is still a quantity that isn't really known other than "it keeps the voltage at what I asked it to be". But the question is always "What is it really doing?", "What do the different levels do?", "How much extra heat/stress on my VRM is it creating?" and "How much is save/proper for my system?". Solid post to this day.

I'm just happy there is forum to house some honest opinions and vendors. There is far too much unicorn horn dust type products out there that do nothing but take your money. Its refreshing to me to see a small company make a product from an open design, with quality parts and sell it as exactly that. Nothing else. Hand built, well designed, quality.