13 nvidia gtx 1060 6g is ok(fill in zone A, and zone B), zone A PSU 1350W, Zone B PSU 850W,virtual mem 80GB.
But add 14th gtx 1060 will show err....still wait ASUS to support it.
I contacted asus for this topic before buying, they told me it's a limitation per model. If you have those specific mining cards it should not be a problem to go above 13 but if you have regular consumer cards, they say it's not going to work for some obscure reason.