Right now I have one asus gtx 660 ti in my build. I'm either looking to upgrade in SLI mode by buying another 660 or should I get 1 single gtx 670? Budget really doesn't matter as long as its within the $300 range. I'm more hoping to get better performance. I play mostly battlefield 3 and are hoping to increase the frames. I am using a corsair TX750 watt power supply. What should I do?
from 660 ti it wont be a much noticeable upgrade to a 670
You can go for SLI or if single Card a factory overclocked 3GB 7970 or even a GTX Titan if you can fund it.
Single card is better but SLI is stronger
660 Ti SLI > GTX 680
but sli brings issues
more power consumption
more driver issue
some game doesn't have sli support so 2nd gpu doesn't kick in.