How to do SLI?

fweberich

Honorable
Jan 30, 2013
5
0
10,510
Well, I have one Geforce GTX 690 and I would like to know the following:

I want to buy a second Geforce GTX 690 to do SLI or whataver you call the combination of both GPUs. Now, Geforce has at least 2 models of the GTX 690. Do I need an Identical model? And how do I find the exact model of my GPU?

Thanks in advance!