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Looks like SLI scaling is genuinely bad, at least on Metro game.

Maingear Shift Microsoft Windows 8.1; 4.5GHz Intel Core i7-5690X (OC); 16GB DDR4 SDRAM 2666MHz; (3) 4GB Nvidia GeForce GTX 980; (2) 250GB SSD RAID 0 + 1TB 7200rpm HDD - very powerful CPU with ultra fast RAM, and dual GTX 980 - 90 FPS according to the results.
Velocity Micro Raptor Z755 Microsoft Windows 10 Home; 4.0GHz Intel Core i7-6700K; 16GB DDR4 SDRAM 2400MHz; 4GB Nvidia GeForce GTX 980; 400GB SSD + 2TB 7200rpm HDD

Also very fast RAM, and CPU and Single GTX 980. 69 FPS. Only 21 less than from dual GTX setup. I would love to see comparisons between old and new technology directly on that type of computers. Otherwise we cannot give any proper judgment on that.
 
Looks like SLI scaling is genuinely bad, at least on Metro game.

Maingear Shift Microsoft Windows 8.1; 4.5GHz Intel Core i7-5690X (OC); 16GB DDR4 SDRAM 2666MHz; (3) 4GB Nvidia GeForce GTX 980; (2) 250GB SSD RAID 0 + 1TB 7200rpm HDD - very powerful CPU with ultra fast RAM, and dual GTX 980 - 90 FPS according to the results.
Velocity Micro Raptor Z755 Microsoft Windows 10 Home; 4.0GHz Intel Core i7-6700K; 16GB DDR4 SDRAM 2400MHz; 4GB Nvidia GeForce GTX 980; 400GB SSD + 2TB 7200rpm HDD

Also very fast RAM, and CPU and Single GTX 980. 69 FPS. Only 21 less than from dual GTX setup. I would love to see comparisons between old and new technology directly on that type of computers. Otherwise we cannot give any proper judgment on that.
I agree it is interesting to see some numbers now though.
 
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