ok since ethomaz did even reply to someone saying it's the same like rrod problem i try to explain the yield problem and why it wouldn't affect the quality of your console and hope i am right with that haha
those round things are wafers. on the wafers you have plenty of chips. the yellow squares are defect chips which can't be used for the console. all those defect chips have small red dots because before you use chips for production, a machine is "looking" at the chips (with a laser or whatever) and marking all defect chips with a color. those can't be used then and won't be used. the left wafer has a yield of 35,7% which means only 35,7% of all chips aren't defect after production. if microsoft has this situation right now it would dramatically increase their costs and they would have to produce much more in the same time, that's why it can be a problem for microsoft but probably not for your console.
that's like you would buy a window and would get one with a hole because in the production, 40% of all windows get a hole (yeah that doesn't happen but to show how crazy people are who think you get those chips in your console)
correct me if i'm wrong but that's how i understand low yield.
