It depend on contract AFAIK, for example AMD is buying wafers (most likely), while NV sometimes pays per good chips instead of just wafers (also rumoured, no one here knows contract details, only Dave maybe? :smile
.
Regardless, not mature node usually have good yields for low-end, decent for mid range, but pretty bad for big chips (58xx yields werent good, and Fermi's simply terrible).
My question is - why AMD would allocate wafers for (probably)
poor-yield high-end GPUs, especially when supply is
very low, when they dont have to force fast launch anyway? I would like to see them as soon as possible as much as anyone here, GCN preferably
I just dont see it happening in 2011, sorry.