I have a 16GB Air with 7 GPU cores. So as the sibling said: CPU is binned (but apparently only for the 7/8 GPU cores), RAM is added separately in the package,

I have a 16GB Air with 7 GPU cores. So as the sibling said: CPU is binned (but apparently only for the 7/8 GPU cores), RAM is added separately in the package, not on the die.