Going SLI will be much easier with the P5N32, which is an nForce board. The other board is based on the 975 chipset from Intel, and while it's very, very fast, it does not officially support SLI. I've heard that people have tweaked the board into doing all sorts of things, including SLI, but your life will be simpler with the P5N32.

Does that answer your question?