As I see it, SLI never been about being cost effective or rational. It's for those who are willing to shell out big coin for top performance, regardless of whether or not they're getting 50% or 5% improvements.
You've gotta pay to play, and though the edge is often minimal, it's there, and for those who want to spend, they can have it.
You've gotta pay to play, and though the edge is often minimal, it's there, and for those who want to spend, they can have it.