Hey guys, been thinking of upgrading from my SLI GTX 580 3GB MSI Lightning Xtreme Edition cards to 2 x GTX 670.

Is it worth it? And how would the performance compare in 2D Surround with a 5760 x 1200 resolution?

Another reason I was thinking of changing over is because of the power usage. Would it make much difference or would the extra I pay for the GTX 670s cards nullify the power savings.

Also, what is the deal with the throttling on the GTX 670s. I've seen it mentioned that they throttle when they reach certain temps? Does that happen on the GTX 680s too?