For sale 1 of ASUS GTX570 DIirectCU II Graphics Card with Dual Fan Cooling. USED. I had 2 dual video cards (ie 4 screens). One of the GTX570's packed it in. Therefore, I am selling 1 of ASUS GTX570 for $50.00; and I am giving the second "not working" dual video card for free. SOLD AS IS WHERE IS. I do not know how to install it.