Another reason to not switch to a quad core is the expected yield of the processors fabricated on a single wafer. Currently, if one core has an error, that single core can be discarded; however, if there are 2 cores in each CPU, they both must be operational, and thus lowers the expected yield of a given wafer.
I'm just curious what will happen to the yields when they are busy cramming more cores onto a single die. Already they have to discard or down-rate many of the die on each wafer. What will happen when you have several cores, any of which might be faulty and ruin the remainder of the die.
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Another reason to not switch to a quad core is the expected yield of the processors fabricated on a single wafer. Currently, if one core has an error, that single core can be discarded; however, if there are 2 cores in each CPU, they both must be operational, and thus lowers the expected yield of a given wafer.
I'm just curious what will happen to the yields when they are busy cramming more cores onto a single die. Already they have to discard or down-rate many of the die on each wafer. What will happen when you have several cores, any of which might be faulty and ruin the remainder of the die.