Can Nvidia GTX 660 drive 3440x1440 Display ?

[toleda]

how would I connect it to a single displayport on a monitor.

Not possible.
DP 1.2, supports 4K, shipping now:
4K and less, one DP cable.
5K requires two DP cables (2 DP connectors on graphics card, 2 DP connectors on display).

DP 1.3 supports 8K