Easier said than done, since it hinges on how many transistors can be packed into a chip, that is, how small can you make a transistor. But the demand for faster computing has been relentlessly pushing transistor sizes down: the numbers have increased from less than five million transistors on a chip in 1986 to 120 million this year. But this success has come at a price: chip production cost from drawing board to marketing stage has spiralled from around $500 million five years ago to over $4 billion this year—a cost few companies in the world can afford.