Why would AMD come out with 2 different architectures within a quarter of each other? Why not have all the chips use the same architecture? If they are coming that close together I am not convinced Vega is significantly different than Polaris. Vega is probably just the name of big Polaris.
Should be "there is no actual single chip that will be faster than that dual GPU".
Unless you have a crystal ball of course
At least for GPUs that are coming out this year, the prediction is pretty reliable. Remember, 14/16 nm is a new node, so we won't see the massive die sizes we saw in Fiji and GM200. Thats why the first round of GPUs will likely focus on compute performance and efficiency, then as the process matures we will see the big hot GPUs. Apple will likely choose the moderate sized efficient GPUs for the Mac Pro, like they did with Tahiti.
My guess is that the future Mac Pro GPU, whatever its code name is, will have Fury like performance or maybe slightly faster but in a 125 W to 150 W envelope.
