Interesting statistic : Rendering an animation with one computer running 1080ti, and one computer with 4 cards 2x970 / 980ti / 1060 .
Now the 4 card computer is faster , but I was expecting more to be honest.
1080ti TIME 1:32
4 GPU TIME 53 sec.
4 GPU computer is running on 1X , with usb riser cards , But I expected that only to affect loading times.
Any thoughts ?
In fact the whole animation might be faster with my previous setup which had the 4 cards in 3 other computers rather then in this semi mining setup with the riser cards , I will test that and see.
Which version of Blender? 2.79b, or 2.79/2.80 experimental? Be sure to experiment with different tile sizes on the 4x system, and maybe try things like using just the 890ti+1060 to see hot that compares to all four, etc.