There are other clever things you can do, like including redundant hardware and error-checking within the CPU, but they all drive up the die area used. Some of this stuff might be able to actually drive down cost by increasing the manufacturing yield, but in general, it will probably be more expensive.
There are other clever things you can do, like including redundant hardware and error-checking within the CPU, but they all drive up the die area used. Some of this stuff might be able to actually drive down cost by increasing the manufacturing yield, but in general, it will probably be more expensive.