So I'm going to purchase either a second 570 2.5gb or just go with a single 670.
As I understand it, the 570 will give me a good amount more power now, but be worth less in the future with less room to expand on. Whereas the 670 would be slightly more power, but have more room for 670 sli in future plus better sell value.
I'm trying to figure out more about SLI to help me make a decision. If I have a second 570 in sli, will my system always be drawing more power than with the single 570 even in idle? Is there a way to turn off the 2nd card or a power saving feature that you can have on when not gaming?
How much hotter and louder would the 570's in sli be? I wouldn't think that they would have to run all that hard to hit 60fps in most games.