Approximately one in a thousand manufactured CPUs fails testing.
Approximately one in a thousand manufactured CPUs fails testing.
The value shifts significantly across generations. The details also vary depending on which stage of the system you're referring to. Intel's 10nm method faces delays because of manufacturing issues, but these problems are identified before the final CPU is built.
It also relies on the stage of the node life cycle we're at. At first startup, rejection rates are greater than they are after several years once the system is optimized and improved.