I have an Evga gtx 660ti signature 2 and I'm borrowing my friends zotac gtx 660ti AMP edition to see if sli will increase my performance the way I want it to before I buy it, but I'm not able to get it working. I have a 750w power supply, so I think that's plenty. my motherboard supports sli (as rock z77extreme 4) and my cpu is a 3570k in case it matters.
both cards work fine on their own in my system, however when I try to sli them it simply gets stuck in a boot loop (shows the as rock logo.. Black screen.. As rock logo... Etc). I've installed all the drivers I can think of for each card individually, but I'm not sure what else to try. Thanks! If you think you can help me better over skype or something I might be willing to give it out.
I know how to spell asrock... My ipad does not :(