Re:In my opinion? No. (Score 0)

Furthermore, SLI is a lot like SMP. First off, the game needs to actually be able to take advantage of it. Next, even if the game does, you're not seeing a linear performance boost; that is to say, if you've got a pair of 6800 Ultras, you're not going to see double performance. The rule of thumb is it'll boost performance by about 65% - sure, it's very substantial, but with the premium price on cards already, it's an even less worthwhile purpose. To top it off, you're going to be looking at an extra $50 or so on a motherboard with SLI, and who knows how much extra in cooling.

SMP is not a magical double in performance either. None threaded applications do not get very much of a performance increase with an SMP based system. The same goes for the performance increase you see with threaded applications. Even an application which has been compiled and written to be multithreaded will not see a 100% performance increase on an SMP system. Your arguments against SLI hold for SMP systems as well almost word for word.