You can use many displays on the GTX 260 2WIN model, depending on what kind of display configuration you are running.

• If you are planning on running your displays in Nvidia Surround mode, you can run up to 3 displays at a time on the three DVI ports.  More info

• If you are planning on running all individual displays in extend mode, you can run up to 4 displays at the same time.  (3  DVI  +  1 mini-HDMI)