OK so we looked at various benchmarks (mostly games benchmarks), and it seems these 2 cards are neck in neck.
However, for our purpose (Max viewport as well as VRay RT), which of these 2 would you recommend and why?
because you’re an Nvidia fan or an ATI fan, doesnt count
If you look only at the specs, and not at benchmarks, it would appear the 6990 is the better option. However as stated, currently for RT the 590 beats the 6990. I wonder if you would notice a difference in viewport, since historicly max viewport is buggy in general (but nitrous has potential). Wonder when they will jack up the drivers.
Yes i would also get the nvidia.
On top of cuda you get physX hardware support, 3d vision, mercury playback and all the other nice stuff in the adobe suite that wont work with ATI.