| zarx said:
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If you want you can order eDram with 24nm structures, no problems. Factories make what you want, it is simply a question of economics. XBox used 90nm eDram up to recently because manufacturing on 90nm nodes has become dirt cheap. These lines can use low price wafers and old machinery that is fully written off. While you will get more than twice the number of eDrams out of a 40nm line, the price ypu pay is higher than double as the price on "antique machinery". Right now, 45nm lines are on the way out as more and more 28/32nm lines are put in use, so more common stuff is now moving from 90nm to 45/40nm. Basically factories have the choice to scrap their 45nm lines or continue to use them for bargain prices (like PC North/Southbridges, or eDram, for example).
