On 08/03/2012 03:23 PM, clipka wrote:

> Last not least, there's also the question of cost: Using cutting-edge
> technology for memory ICs would result in prohibitively high per-bit
> costs; such production lines are therefore almost exclusively used for
> high-margin products such as high-performance CPUs or GPUs, until the
> next generation of cutting-edge fab technology becomes available. The
> older production lines might then be used for another generation to
> manufacture low-cost CPUs and GPUs, and finally for stuff where
> per-transistor costs are more important than die size, such as memory ICs.

Right. So that's why, even though 40nm technology already exists, they 
don't use it just to build (say) USB flash drives. (?)

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