Hello,
I have the following:
MB - ROG Crosshair VIII Hero Wi-Fi running BIOS version number 1201
RAM - G.Skill Ripjaws V 64GB 4 x 16GB DDR4-3600 PC4-28800 CL16 Memory Kit F4-3600C16Q-64GVKC – Black – This is on the Memory QVL list
CPU – AMD 3950x
The issue is, I can’t seem to get the BIOS to set my RAM to 3600 MHz. I set it up through D.O.C.P as Profile 1. Is there no XMP?
When I boot the computer and launch CPUID ROG CPU-Z it shows my memory is at:
DRAM Frequency 1796.4
FSB: DRAM 3:54
CL 16, tRCD 19, tRP 19, tRAS 39, tRC 85, CR 1T
Hmm, according to the SPD tab on CPU-Z the tRC should be 58 for the XMP-3602 profile.
In the BIOS after updating the DOCP it had tRC as Auto and I manually changed it to 58. Rebooted and the Memory frequency still shows 1796.4 MHz Ironically almost exactly half of the 3600 MHz I am trying to get the RAM to run at.
When I set the BIOS to Auto on everything, the ram only will go to 1064 MHz.
I also checked NZXT CAM and it shows Default Clock Speed 1066 MHz and Current Clock Speed 1796 MHz.
In the BIOS it shows that it should boot with the speed at 3600 MHz.
Is there a value I should change somewhere?
*Note, when I started this note, I had a BIOS of 1105. I noticed there is now a BIOS version of 1201. I did update the BIOS but this did not fix the issue.
Please let me know what you think.
Thank you,
-Craig