Originally Posted by variant
No, it doesn't work like that for either of your comments.
First off, AoS is very CPU and GPU dependent, so there is no "GPU bound". Secondly, older versions of the game don't really negatively impact the 390X. Thirdly, all Robert is stating is the benefits of explicit multi-adapter which is completely game side. I just demonstrated between someone running a dual 390X and a single 390X, frame rate scaling is not linear.
Actually, look at the guy's screenshot, it literally claims that he is GPU bound on 100% of frames (okay, .2% of frams in heavy batches are CPU bound but who cares). And that's one thing i trust AotS bench about.
Secondly, Robert explicitly stated the scaling on mGPU. If he said the "from 1.5x to 1.9x" instead of "1.83x" there would be no base to the whole speculation about rx480 single gpu performance.
Next up, older version or not, newer ones did have noticeable performance changes evidently. That includes drivers.
And yes, i did observe that Robert's claim to scaling is better than what i saw in the "leaked" benches.