To all of those wondering, I received 2 of the 670 SC cards and the issues are artifacting and system freezes , if you did get a faulty sc card they will 2 day air u a FTW model.
I happen to own a zr30w and an acer 120hz 27 inch 3d monitor, I only use the zr30w for gaming, it is way more gorgeous, along with 3 x 580 3gb, the acer is never even on, unless i play batman in 3d