Of discrete GPU sales? It's laughable and don't believe this for a second.
First of all, the initial figure of 70/30 doesn't seem to be accurate (I am sure AMD's dGPU sales accounted for more than 30%). Secondly, high-end GPUs (R9) are a drop in the ocean as far as dGPUs sales go, and R7 is nothing new. They do not change much on the overall scale.
In fact, other than miners, [on forums] I don't see a huge enthusiasm when it comes to R9, either, it's a little better value than Nvidia's 7xx, that's about it.
AMD sure is pushing the hype, though.
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