4 way sli won't gives you better performance they are useless go with 2 gtx570 its rock even single 570 can handle every game at maxed out.
i'm sorry but a single gtx 570 will not run any game maxed out unless you are running a low res. anytime someone says blank blank card will run any game maxed out. take it with a grain of salt. if you are running a higher res it takes more gpu power. back the title of this thread. YES, 570's can do 4-way sli. (looks over at pc i'm typing on and see's 4 570's). non of them say they support 4 way but they do. even with 4 570's in sli OC'd to 900 each i can't max out ever game at a res of 5760x1080(3 1920x1080 monitors)