Question: how we consider if IOMMU is "misconfigured in the firmware" or not, and how we can check that "configuration" ... ?Will read that section of the OC manual soon, but meanwhile do they provide any information about the possibility of correcting IOMMU configuration?
I'm embarrassed to say I can't tell whether it's native or not It's Corsair CMK32GX4M2B3000C15. I'm guessing not native since it defaults to 2133 without XMP.Just to be clear, is your memory natively spec’d at 3000MHz, but you’ve disabled XMP and down-clocked it to 2666MHz?
Thanks! So confusing with this in the compatibility list:Your memory is 3000MHz.
All memory above 2133 in BIOS is classed as overclocked, so that's the default. Above that, yes, your memory is fine although unwanted ejecting USB devices on wake-from-sleep may occur.
On my z490 box, I’m using 32 GB of Corsair vengeance rgb memory @ 3200 MHz. 8 GB DIMMs.Interesting. What is the make/model of your 8GB DIMM, and its native speed?
I tried various combinations of 16GB DIMMs on my Z490 Vision D that is also running stock F5, but side effects disappear when only one 16GB module is installed. Haven’t tried 8GB modules exclusively on that system yet.
Yes, I have 128GB of 2666MHz but haven't done any experimentation with the test BIOS.Wow! So a Z390 Designare with 64GB of native 2666MHz memory has no side effects with AppleVTD!
Will add your name and to “Experiment Update #3”.
- Is XMP Profile 1 disabled?
- Which version of BIOS is installed?
Does anyone else have native 2666MHz memory??