It's obviously a misprint or misinterpretation, because you don't just make 4 when the finest granularity possible is a lot of 20 wafers.
By the way, Re: "Since AMD has been showing them privately since October"
Those were the rumors, but also completely unsubstantiated. AMD has not shown anything that has been reported outside of the rumor mills, and I would think if AMD had something to show that actually worked (besides a busted wafer or PPT slides), they would have.
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