What puzzles me in this transition is how does Apple plan to manage lower grade chips yielded by the fabrication. Intel's product line is largely built around the need to sell lower grade chips, rather than having them binned.<p>What's Apple solution to this problem? Do they design their chips to be redundant (e.g. an 8 core chip is actually designed with 10 cores)? Are they willing to take the loss from binning lower grade chips (take advantage of their high profit margins)? Or have they achieved adequate yield of high grade chips, that this loss is really a non-issue?