Did I just burn..

[EaglePhoenix]

Not sure where you got that the gtx 970 doesn't support dx12. I run one and it supports dx12 just fine. But yeah, get yourself something cheap until that 1070 is available.

And yes, Rohan on a i5-3570k's integrated graphics is just fine. There's nothing about Rohan that taxes graphics, integrated or cards, in the least.

What I meant was that Nvidia 9xx series and below only support dx12 on a driver's basis - whereas AMD's hardware is far superior than Nvidia's. Only AMD lacks sincerely (as in near non-existent) on their drivers and Nvidia has always been able to get (far) ahead of them purely on their drivers.
Now, dx12 doesn't need all them drivers as much as dx11 did. You can already notice this with current gen cards and dx12.

AMD cards, whereas they'll get far behind on dx11 benchmarks, get extreme performance boosts with dx12 and surpass many of their Nvidia equivalents (dx12 only). Nvidia on the other hand, does not get these extreme performance boosts with dx12 at the moment. They still get some increase, but not near as spectacular as AMD gets and there's nothing Nvidia can do about that since drivers cannot fix that issue. A new architecture can, however.

Which is also the reason I'm pretty miffed having to resort to a buy 2 cards in a fairly short timespan, since Nvidia does indeed release new gen cards momentarily.
It's not all that black and white as described per above, but you get the general idea.

Mind, I'm neither an AMD or Nvidia enthusiast - I just go for whatever is best for my (gaming) needs.