Legal reasons are why the arrangement between AMD, GF, and Mubadala was so tortured.I am not inplying mubadale should pay more or less. That way of looking at it is uninteresting in my world and you have lawyers and accountants for that.
AMD had to be the owner in some legal sense because it outsourcing the majority of its x86 manufacturing would allow Intel to challenge AMD's adherence to a cross-licensing deal that kept their respective products out of IP litigation.
Intel eventually challenged it anyway.
There is a reason we see a change to the wsa today. Longer period, fines for using tsmc/ss and inderectly mubadala ownership in amd.
The exact mix of problems is unclear. AMD is obligated to buy some amount of volume from GF, and that is already something that it is having problems doing because it is not very successful.
Further, it is potentially reducing its volume further by manufacturing products originally agreed to be built at GF at other foundries, likely due to GF being not very successful in this portion of its business.
AMD wants to make decent products that it can sell, which GF apparently is not facilitating well at this node or the 10nm node it is skipping.
GF has put aside engineering resources and a share of the capacity and overhead of multi-billion dollar facilities on specific variations of the tech that are generally important only to AMD.
What this agreement is actually doing is formalizing the regular penalties AMD has taken before for very similar situations, which were theoretically "temporary" in nature.
AMD's agreement with Intel was changed to allow outsourced production.And why is it possible now and not back then if it was even considered?
The price, from what I can tell in a version of the agreement, is that it no longer covers AMD's processors after a deadline that has expired.
Zen's matching Haswell's base ISA and standard extensions may be a symptom of the end of AMD matching Intel's ISA changes going forward.