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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by geranim0 on Sunday March 20, 2022 @08:54PM (#30748723)
> a single defect ruins the whole chip

no. intel used to make extra cores for their 128 core cpus to account for the defects, and it was not rare to receive a cpu with more than 128 cores because it was a good one.

Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by uluyol on Monday March 21, 2022 @12:37AM (#30750341)
See the next sentence: "Of course you can build chips that can tolerate a few defects, but the principle holds."