I have an ATI 5770 that has served me very well. I currently am planning to get 3 x monitors at 1920x1200 resolution and that's not something my card can currently do. Does anyone know a GeForce or Nvidia card that can do this and is at least similar in performance to the ATI 5770?
You can Crossfire the 5770, and run it on 3 monitors, though I'd doubt the performance would be any good, at best choppy with your resolution. The HD7970 Ghz Edition is faster than the HD5770 crossfire, and supports Eyefinity in many games it supports with over 30 FPS at lower settings.