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The 14nm process Samsung gave to GF is a low power one, for phones etc.
I have not found any info on a high power process from GF below 20nm, not sure where their 20 is at either. It's really rather panic time for the GPU industry, past time for a new node and none are truly viable. All there is is the TSMC "16 finfet plus" which was up until now scheduled to enter volume production in 2016, with risk production late 2015.
Like a lot of TSMC processes it could end in tears and we might not get anything new until 2017 unless GF steps up.
The 14nm process Samsung gave to GF is a low power one, for phones etc
The new 14nm-XM FinFET technology would be featured inside AMD’s low power product stacks which includes Mobile, Tablets and All-In-Ones.