DDR4 Memory issue with 5820k
DDR4 Memory issue with 5820k
Set the DRAM voltage to 1.35v by manually entering it once XMP is activated.
Adjust the DRAM voltage to operate at 1.35v by entering it manually once XMP is activated. After enabling XMP, I confirmed the voltage was 1.35v at 3000mhz. At 2800, the XMP profile showed it as 1.2v.
Are you still using the 4.3Ghz/2500 Memory configuration, or are you running a stock CPU with 2800 or 3000 XMP profiles? If you're at 4.3, 1.23 might feel a bit too light on Vcore for stability. It's also conceivable that your CPU's IMC isn't performing optimally. As CorsairJoseph noted, anything above 2133 is likely overclocking the IMC.
Are you still using the 4.3Ghz/2500 Memory configuration, or are you running the stock CPU with a 2800 or 3000 XMP profile? If you're at 4.3, a voltage of 1.23 might be a bit too light for stability. It's also possible your CPU's IMC isn't performing well. As CorsairJoseph mentioned, anything above 2133 is overclocking the IMC. Thank you all for keeping up with your responses—I really value your assistance!
I adjusted back to 2133 on memory, kept the CPU at 4.4Ghz with 1.23v, and tested stability using realbench, OCCT, XTU, and Aida64 for several hours. It seems the memory controller isn't cooperating.
I'm still struggling to stabilize the 2800mhz profile, even with the right voltage and settings. Adjusting the system agent voltage didn't help.
The 3000mhz profile doesn't let me access the BIOS; I have to press the "MemOk" button on the motherboard to proceed.
Given the testing you've I think your on the right track. Since you can run CPU no problem at 4.4Ghz and 2133 memory, and stock CPU settings you can't run memory stable at XMP, its looking like an IMC limitation. With that said, I'd just try to get max CPU frequency stable, get memory up to a frequency that is stable. Then, since 2800 and 3000 are a no go, tighten timings to compensate keeping at 1.35v DRAM voltage.