I have an ASUS GTX 660 ti and I am replacing it with an ASUS GTX 680 OC card. I am wondering if the software disc that has GPU Tweak on it needs to be run or is the install from the 660 the same thing and what I already have on my computer will suffice. I know I will go to the ASUS website and download many drivers for the new 680. I really appreciate any help from the Tom's crew.