which video card for CUDA 2.2 and PCI-E x1 slot at 2560x1600?

Accelerated Computing CUDA CUDA Programming and Performance
1

I have a free PCI-E x1 slot and would like to plug in a video card that would be
compatible with CUDA 2.2 and will be able to run at 2560x1600 resolution.
What are my choices?