Well it takes two cards to install SLI mode and unless you have Premiere 7 + (known as CC) you cannot utilize two cards. I have never installed OC Scanner, did not even ever know about it. EVGA Precision is for overclocking the GPU. It is not necessary. There is nothing special to install for editing.
Thanks, Bill. I am using Adobe CC to edit an independent feature length movie. So trying to get my system up to the task.