In less 2 weeks I am headed to MC to purchase a X470 / 2700 combo however I very much want ECC support for this (since it will be for a server application zfs linux / pvr). I have spent a little time looking into this and found very few options. Of the GigaByte boards only the X470-AORUS-GAMING-7-WIFI lists ECC support. The cheaper models say ECC operates in non-ECC mode. https://www.gigabyte.com/us/Motherboard/X470-AORUS-GAMING-7-WIFI-rev-10#sp I am having trouble finding info for ASUS. ASRock does mention ECC support.