TSMC and GlobalFoundries, could manufacture 7rd generation AMD Ryzen processors in XNUMXnm in parallel.
It could be the situation that AMD asks TSMC to reinforce the GlobalFoundries production in regards to 7nm AMD Ryzen processors.
This information is quite curious and unusual, since normally, it is only one manufacturer who usually takes care of a whole family of chips. It appears that GlobalFoundries chief technology officer Gary Patton has a different view of the future of AMD, according to an EE Times report. The function will have the mission of manufacturing the first AMD processors in 7nm, this year, but, it seems that it will not be the only one to produce these processors, because AMD also wants to resort to TSMC.
GlobalFoundries and TSMC producing AMD processor in 7nm?
The third generation of AMD Ryzen processors will be based on 7nm, there is no doubt about that, but something in the game has changed. Who currently produces the Ryzen is GF, but it seems that TSMC will keep a part of the production, apparently of the high range. TSMC would have the ability to manufacture processors that work at a higher frequency, thanks to integrating another layer to the silicon. TSMC manufactures the Vega in 7nm, so this part would remain the same and GF would not be without Ryzen, but it could pass a part of the production to TSMC.
This situation is in the case of adverse factors, which could occur if GF does not meet AMD's demand or does not manage to polish the process in time, so that the third-generation Ryzen, perform as they should. Even if demand were higher than expected, they could use TSMC, in order not to have stock problems. If today the silicon lottery is already important, in the case of having processors from two different manufacturers, it can be crazy. You just have to see the assembly of the first Vega, whose GPU was assembled by three different manufacturers and gave one of terrible problems.
Source: OC3D

The good news is that unlike Vega, there are no assemblers with different custom versions of the processors: v. Now really, you have to be very useless to design die difference.