My budget is $1100 maximum. I already have chosen all of the parts I want for the build, but I have not yet decided what graphics card I should buy.
I was suggested the gtx 570, but I am wondering if I need it or not.
My mother board is a z68 sli and crossfire ready.
I think I just want to stick it out with one gpu for now but I will add another one in the future.
So should I get the gtx 570? Or is there a better graphics card for around the same price or maybe even less?
You'd be fine with a 6950 2GB. Great performance and offers a higher vram in case you use a higher resolution or eyefinity. If you are running adobe products for work/school that can take advantage of CUDA then go with gtx 570 otherwise you won't see much improvement performance wise. 570 also uses more power and generates more heat.