The fab was built for a maximum capacity of 20,000 wafer starts a month and it's now doing 30,000.
Udo Nothelfer, VP of AMD's Fab36 told us that the current production of Fab30 isn't 20,000 or 25,000 wafer starts per month, but a rather astonishing 30,000, or 50% more than company designed the Fab for.More details at The Inquirer.
How was this achieved? AMD reps claim that it is linked to a "Mixed Mode" manufacturing method, side-by-side revenue and test manufacturing and reaction time of a single day, to start producing additional ordered wafers. In the end, it will all boil down to APM and the fact that AMD uses zero-floor wafer storage above the machines and heads of engineers.