Corsair CMK16GX4M2B3000C15 mounted on B350 ROG STRIX
Corsair CMK16GX4M2B3000C15 mounted on B350 ROG STRIX
I don’t have any experience with OC, but I need your assistance.
Current BIOS 3401.
I tested many settings to get my RAM running at 2933mhz. Most didn’t work. D.O.C.P doesn’t function above 2666Mhz.
They finally ran at 2933Mhz manually with the specified timings (15-17-17-17-35) – maybe 15-17-17-17-52-1T. It worked for about a week, but I wasn’t sure about its stability.
I tried Prime95 for the first time. If done properly, I didn’t see any errors. Then it wouldn’t boot. Now I’m using the same settings again.
However, my issue is that in BIOS I set 15-17-17-17-35 and it changed to 16-17-17-17-35. I see this both on CPU-Z and BIOS. Can you explain why this is happening? Anyone with these tools can help?
The newest BIOS version is 3803, but if you can achieve 2933Mhz then that's acceptable. Several users faced difficulties reaching their SPD at 3000MHz and after many attempts I was able to hit 2933Mhz with my Dominators while maintaining stability. I've experimented with various BIOS updates. A 2T Command rate worked for me. I suggest returning the devices if possible and using G.Skill Ripjaws (2x8) at 3200MHz F4-3200C16D-16GVK with BIOS 3803. It has been tested at voltage levels ranging from 16 to 38 and currents between 1.35 to 1.4A. If D.O.C.P. doesn't work, you'll need to adjust the BIOS settings manually.
Well yeah, I don't think I can return them.
It might or might not settle at 2933Mhz, though my issue is:
1) It often stops posting for 2-3 tries before continuing (the week it worked fine at that speed had no failures).
2) Second, the main problem is my RAM is CL15 and I've set it to 15-17-17-17-35, but suddenly it jumps to 16-17-17-17-35. Why does this happen? Since I probably only have a max of 15?
I also experimented with SOC settings, raising it to 1.2V which appeared to stabilize under load. Be mindful of your Module temperatures while adjusting SOC levels.
The reason behind this is unclear. The AM4 platform is quite strict about RAM, and I think G.Skill developers did a solid job testing it on this system. Corsair performs well but relies more on marketing than technical accuracy.
This situation has been really frustrating for some users, and ROG developers are still striving to develop a stable BIOS that properly handles OC RAM. That’s why I always advise anyone with this platform to return the unit before buying if it fails. Tell the store they don’t support it and have failed Memtest86. Some will, others won’t, but an RMA is available for defective parts.
I'm not confident about the retailer's response because they claim everything is fine. My issue is the increased latency—currently 2933Mhz, but it shifts from CL15 to CL16 in BIOS and CPU-Z. I have no idea what's causing this. Is there something wrong with that?
Choosing your RAM SPD in BIOS is done manually or through D.O.C.P. It shouldn't cause significant performance issues if the system remains stable.