It's as koda443 says, you need to research a better package.
You can check the stats of all packages here: https://hardware-tycoon.wikia.com/wiki/CPU and as you can see DIP72 only supports up to 9.2MHz
It's as koda443 says, you need to research a better package.
You can check the stats of all packages here: https://hardware-tycoon.wikia.com/wiki/CPU and as you can see DIP72 only supports up to 9.2MHz