To clarify yes using four cards can have negative scaling when your cpu isn't fast enough and we are not using graphically demanding options.While the second option is easy to fix the first not so much, I believe even Intel's fastest isn't fast enough to feed these four beasts.From the conclusion of the review you linked
" Especially for 4-way SLI, we noticed that performance will often times decrease rather than increase."
I believe some site cant recall now tested and concluded that 3 way was prolly the best way to go but that doesn't mean you can't grab one more
That makes sense, probably explain the poor scaling results from some reviews. But I don't expect anything less than a heavily OCed Intel HEDT powering a 4-way SLI system, and of course maxed out settings.
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