Will this build for one work? I built my last system myself but that was a long time ago, and am rather rusty on current builds and if everything will be compatible with one and other. Will it fit in the case!?! enough power? Any help would be greatly appreciated
$730 for a 1070?! Are they out of their fucking minds? Buy 3 RX 480s You'll get a shitload more power for the same or less.
This is assuming that the software wasn't coded by an idiot and is optimized for both AMD and Nvidia cards equally and can scale across multiple cards. This should work a lot better than in games if you're doing ray tracing and such as it doesn't need to be synchronized between GPUs in ms timescales.
See if you can find a benchmark or information on what your programs do processing wise. This should give you an idea on what will work best.
As for the parts you have working, they look okay. You should be fine.
3DS Max (as most Autodesk software) only needs graphics acceleration. ZBrush is CPU bound. Thanks to @flazza for the info. Maya, not sure but I think that was OpenCL. UE. Like Unreal Engine? Does not matter.
That makes this difficult. My guess is that AMD will come out on top of Nvidia in VR but only time will tell.
So far: Xeon E5-1650 V3 & MSi 980ti http://au.pcpartpicker.com/list/wyWk6X This build has less raw power but CUDA might give it an edge in ZBrush. Or: Xeon E5-1650 V3 & 2x XFX RX 480 8GB http://au.pcpartpicker.com/list/G8Qk6X More raw power, very helpful in Autodesk software. Also Maya can take advantage of the dual GPUs.