because intel has not custom designed apple parts before?
like the mba cpu....
Intel has never made custom CPU silicon for Apple before.
The MBA CPU was on off-the-shelf CPU chip put into small form factor carrier that was already in the Intel pipeline.
It is my understanding the Core i5/i7 release was the "Tick" and the die shrink of the same is the "Tock".
Most of the old Core iN desktop chips are 45nm - the Tick.
The 32nm chips, also called Core iN, are the Tock.
Ooop, had that completely backwards - "Tock" is Nehalem, "Tick" is 32nm.
Check the specs to be sure, some Core i5 chips are 45nm, some are 32nm.