What are the cost of a 40nm Wafer? $5000? $6000? With 100% and 106 chip on a wafer they would pay $48/$56. That's to high for a $299 selling point?
It will never be 100%. Lets be fair and say 50%. Your going to pay double that cost and be at close to $100 per chip.
Cypress on the other hand is smaller and has been in production longer 6 months longer so whatever yields nvidia is getting ati should be doing more and they already have more chips per wafer than nvidia. Then you have board and ram price diffrences.
Before nvidia's chips even ship ati can adjust pricing.
Though I really odn't see nvidia selling these cards for $300
By the time you get everything together even claiming $56 a chip. You have board , ram , cooling and other costs . Your most likely looking at over $200 per board.
Though if true and the 470 is clser to the 5870 and is priced at $300 ati would respond by pricing the 5870 closer to $300 and we all win. Heck ati should be able to under cut them cost wise and the 5870 is a much smaller and less complex board which has been in production for half a year already.