STRIX Z370-G wont boot with ram speed above 2133mhz

[Koneko]

Long story short... My system will not boot with any memory speed over 2133Mhz.


Memory: 2x G.SKILL TridentZ F4-2800C14D-32GTZ
CPU: i7-8700
Motherboard: STRIX Z370-G Gaming (Wifi-AC)

I have tried setting XMP and manually adjusting the settings. The only setting that causes the system to not boot is ram speeds above 2133Mhz. I can set XMP and lower the speed to 2133Mhz and everything works at stock voltages. To get the system to boot with higher speeds I have tried adjusting voltages based on other posts with similar issues but nothing seems to be working.

DRAM: 1.4v
VCCIO voltage: 1.2v
System Agent voltage: 1.2v

Any help would be appreciated!

[chevell65]

Have you tried using the XMP setting with just one stick of memory in the 2nd slot 'A2" away from the CPU?

Try doing this with one stick at a time to see if either one can be booted at XMP. Then try them both at XMP, one at a time, in slot 'B2".

You may be able to isolate the problem to a particular slot or memory stick this way.

[Koneko]

Thanks, I will give that a try this evening.

[Koneko]

So i just went through DIMM by DIMM and tested them all. They all booted with no issue with XMP @ 2800mhz.... i put them all together and they STILL all worked! The only thing I can think is that re-seating them resolved something or, pairing them up by serial number matched the pairs correctly.

[chevell65]

Hey that's good then. Maybe something to do with memory training by the board or who knows glad it's working now.