Asus Max Extreme Z Stock issues

carnaged

New member
HI all,

Hi all,

This is my first post and its a bit of a beast, sorry.

I have my overclock sorted on this but I don't want to run it overclocked at the minute so I have been in a battle to run it stock as its not easy on this board.

The default stock voltage is 1.240V on this motherboard, at this setting it will allow you to change the memory frequency and dram timings without adding any automatic LLC. However if you change the AI overclocker to manual or put your memory into XMP profile it automatically applies a 75% auto LLC. This makes the CPU run at 1.256V. When I run my ram on 1866mhz and turn off LLC as I'm not overclocking after a certain amount of time on the machine if I reboot I get a no keyboard message and when I go into windows I have an unknown USB device. This only goes on a full cmos reset, at this point I can put my settings back in and it will work fine again for 4-5 hours and then once rebooted I will lose USB devices again.

So unless I run at 75% LLC at 1866mhz I run into problems, I have not tried running the memory at 1333mhz with no LLC but I would assume it would be fine so I am thinking that the cpu requires more juice to run at 1866mhz.

However, I wanted to make it so my CPU would lower the voltage at idle so I have to put it in Offset mode, the thing with offset mode however is that once you change your memory frequency to 1866mhz on auto it puts the cpu to 1.328v which seems massive for stock. So I have to set it to 0.090 negative offset in order to get it back down to 1.256v which is what it runs at now.

Should the memory need extra voltage to run at 1866mhz, I'm not sure why but at every turn this mobo wants to throw volage at the CPU.

Also it would appear that the board always runs at 3800mhz under load no matter what.
 
First check if you have the latest bios installed.. If not, update.

If the memory runs faster, you need a higher uncore voltage for the memory controller. The Uncore voltage and the cpu core voltage cannot differ to much becouse of voltage leak within the chip. When this happens the system can become unstable, or worst case senario, the cpu dies... (maby this has something to do with the usb stuff) Anyway the faster the memory the higher the uncore voltage, and maby to prevent voltage leak more vcore in this case... Thats why it sets it higher...

I don't know if this is the real deal in you're situation, but it could explain it.

Cheers
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