So, I bought an EVGA GeForce GTX 780 SC ACX a little less than a year ago. Been a great card so far but I was considering getting another one to have and SLI setup. Problem is this specific card is no longer made and it's quite hard to find a new one at a reasonable price ( talking $600 + ).
My question is, for SLI to work properly/optimally does it have to be the EXACT same card? Or can I pick up another GTX 780 in another model?
Thanks!