Fab 8 is for 28nm and below (ARM and other consumers+AMD Bulk)
Fab 1 is for 32nm and below (AMD alone non bulk)
32nm production will not affect 28nm production by next year, vice versa
45nm is getting EOL because there is no need for 45nm
Global Foundries is backed by a very and I mean a very rich government technology investor
It isn't high cost to AMD
Thats true, but capcity will get short when demand goes up and they are putting alot of demand on glofo currently. IIRC some other chip manu's recently either talked or did move from tsmc to glofo.
Its likely just a culmination of things but my bet is on production capcity on 32nm just not being there.You always push your big sellers out first and if they can't allot the proper production time for the chips and keep quantity on the apu's plus all the other products, plus the other customers products, yeah its going to cuase delays.
there also been speculation and some confrimation by amd that they are considering glofo for gpus sooner or later. So its hard to say whats going on when they are being quiet, but I think its a capacity issue. It happens.