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Thread ID: 150781 2022-07-08 21:15:00 RAM optimization - new build. Bryan (147) Press F1
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1487297 2022-07-08 21:15:00 I have upgraded my PC to an Asus Z170 board. It was necessary to upgrade the RAM to DDR4 so I got 3200Mhz. It seems that I am using only 1662Mhz.

I am working in the dark here and cannot work out how to get the maximum of 3200Mhz. I have looked but am flummoxed. Could someone help me fix this please?
Bryan (147)
1487298 2022-07-08 21:59:00 rog.asus.com

Short version;


1) No matter what speed your ram kit is rated for , stock speed for most DDR4 kits is 2133Mhz hence why unless you manualy OC your kit or enable XMP/DOCP profiles ( i would advise you to set speed and timings manually and not touch DOCP ) your ram will ran at stock speed ! Corsair iCue shows 1065Mhz because DDR stands for '' Double Data Rate'' so a kit running at 2133 is '' effectively '' running at half the rated speed !

2) Now that you know the basics lets move to the next topic . Just because you bought a kit rated for 3600Mhz it doesn't mean that your processor will be able to run at this speed and that's especialy true for Ryzen ! Indeed Ryzen memory controller on 1000 and 2000 series ( wich is responsible for RAM speed ) is pretty sensitive when it comes to RAM speed , much better on 2000 series than 1000 series but still . In general you will have hard time to achieve 3600Mhz on Zen+ ( 2000 series ) on dual channel ( 2 memory sticks ) let alone on quad channel ( 4 memory sticks ) hence why you are experiencing those instability issues !
piroska (17583)
1487299 2022-07-08 22:12:00 Thank you piroska. I had a feeling that was what was happening. My system is however intel with an i7 6700k processor. I have set the dram to XMP and the Dram speed is set at 3200Mhz. ASUS instructions point to XMP1 which does not appear in the BIOS of my motherboard. Bryan (147)
1487300 2022-07-08 22:15:00 Reading on the ASUS forums, its stated
The RAM speed issue with Z170-A is well documented

Being an older board you may look at the BIOS version to check if there's a newer version that may ( or may not) help.
wainuitech (129)
1487301 2022-07-08 22:52:00 ASUS website shows latest BIOS as 3802 which my system has. Bryan (147)
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