XMP Profile
XMP Profile
Hi, I see you're having trouble with your XMP profile settings. Your system shows a clock speed of 1067MHz, but you're trying to use XMP with the frequency set to "Auto." It seems the memory isn't responding properly at that speed. You mentioned trying DDR4 2666MHz, but it's looping instead of booting. Also, changing the DRAM voltage to "Auto" didn't help. Have you checked if your motherboard supports XMP at that frequency?
Corsair Vengeance LPX DDR4 8GB RAM clocked at 2666MHz, ASROCK AB350M Pro4 motherboard
The RAM isn't displaying on the Qualified Vendor List, which suggests full support might be lacking. Using XMP can already cause issues. ASRock boards tend to be sensitive to BIOS settings—set voltage to auto, frequency to 2666, and turn off XMP. After adjusting, save the profile, then exit BIOS and save.
2666MHz isn't a very fast frequency. Most boards should handle it without any QVL checks. Yet it might still be the root of the problem. Perhaps the motherboard isn't teaching the memory correctly, leading to a boot loop. Is your BIOS current? If not, update it first. Also, try adjusting the memory voltage to 1.35V and see if the system starts. If that doesn't work, delete the XMP profile, manually configure the primary timings to 18-18-18-36, and set the tRC to 54. Maintain the voltage at 1.35V.
I own an ASRock X570 Taichi. Recently they've become more cautious with the Infinity Fabric clock due to recent BIOS updates. For instance, my DIMMs are set to 3200 in XMP mode. Still, I need to manually adjust the IF clock to 1600, which is a 2:1 ratio. Proceed and enable XMP mode for 2666, but keep the IF clock at 1333. In theory, this should function correctly.