IMO, this answer sounds like 1. Something must be done 2. This is something 3. We should do this I think almost any competent CPU engineer would tell you that this actually has no meaningful impact. You're pointing out a real problem, but that doesn't mean this helps at all.
testing a set of chips from one uarch form one vendor and having it pass some particular overclocked test (where passing means not corrupting the EIP while not crashing?) tells you as much about another uarch from the same vendor as it does about a chip from another vendor.
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It doesn't even tell you much about another stepping from the same chip (and vendors will sometimes release revisions without updating the stepping since OEMs complain when you officially change the stepping).
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Ok, so now you've tested maybe 10 chips from 10 different models of Intel chips and none fail in this way, well that's the expected outcome, what does that tell you about another model from Intel? Same thing it tells you about a Transmeta chip you didn't test.
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