Originally posted by falconeye Defect density 1.2/cm^2 (DRAM was better at 0.5/cm^2), yield was 37%, wafer cost was $1890, function test yield was 70%, final cost per CPU was 112$, sales price per 1000 was 350$. That's $26000 revenue per wafer. At that time, DRAM was more like $3000 revenue per wafer cost of $1500, despite the same yield rate (larger die for 64MB).
Intel has a monopoly on the "Intel" processor and asks 3x the manufacturing costs as chip price. DRAM is more like 1.8x. Image sensors may be between 2x 1/2.3" and 2.5x (FF).
CPU sales also have a lot less sales volume than memory sales, so it's not just monopoly (FF sensors are probably a lot less than CPU chips by at least 2-3 orders of magnitude). Intel's manufacturing is also amazingly good at keeping yields up...they're a lot stronger than 3rd party fabs (AMD learned that the hard way w/ the fab that made their current Llano APU chips).
I'd agree that Nikon probably pays Sony $500-600 per FF chip...Sony could probably sell them for less, but they need to make a profit.
Dum question, but has anyone tried calling a Sony chip sales rep to see how much the FF chip costs?
And even if we do isolate the cost of the chip, we still have Pentax's design/manufacturing/sales cost. Aristophanes' Pentax user base vs. Canikon's FF sales per year is what their product management department has to go against when trying to justify a product. The first FF body will no doubt have to be sold at a loss and Pentax didn't have deep enough pockets for it...maybe Ricoh does or Samsung might have, but it'd definitely have to be a leap of faith. Given all that, I'm not at all surprised they chose the 645D as their halo product...it was probably a loss leader, but with decent marketing payback...
If Canikon ever make a lower tier FF body in the $2200 range, Pentax may be forced to do a FF body though...
p.s., I'm still surprised Nikon/Pentax haven't put Sony's 24MP APS-C sensor into a body...nearly a year old already...