hey guys i was wondering if a 5770 is going to be powerful enough to run eyefinity on all three of my 20 inch monitors with resolution of 1600 x 900. Later in the future i will probably buy i second 5770 but i don't have the money right now.
No, it's not going to give you good performance with an eyefinity setup. I wouldn't really bother even until you get a second card and in that case you may as well just get an HD5850 and OC it. You'll end up with better performance overall and the doubled memory bandwidth will really help at the high resolution you'll be using with eyefinity.
Yes you can game, just not on max settings of course. I'm sure you could put on pretty high settings on less demanding games like FEAR 2, but Crysis I wouldn't be surprised if it's not smooth at medium settings.