The Northwood is about 10% larger than the 970 but will have a much smaller variable manufacturing cost than the 970 due to the latter being made in a significantly more expensive process (SOI CMOS with one more interconnect layer) and manufactured in much smaller volumes (Apple is roughly 3% of the PC market and dropping). Add the fact that development NRE of the 970 will be spread over a much smaller lifetime sales volume and it is obvious that the total cost per device will be much higher for the 970 than the P4. I will grant you that when it comes to *pricing* the numbers may closer than the total costs suggests as Intel consistently makes money selling uPs while IBM Micro consistently loses money.