It also has the option to play the game at lower resolutions and stretch, so some should be able to play at a reasonable frame rate, with it looking decent. It just doesn't seem to be as well optimized as even blackflag, which is a shame. I'm waiting for a few patches.
It is games like this that Nvidia should have let us keep our old cards in our system as dedicated physx cards.
You can set your old GPU to be a dedicated Physx card.
Why did you think you couldn't?