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A comment on M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs. Parent comment

Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by jleahy on Sunday March 20, 2022 @03:01PM (#30745526)
I would have thought this approach would cause issues for leakage power? Better to run fast then sleep and power gate to cut leakage, especially at smaller geometries.

Or do you think they are mostly using HVt cells?

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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by GeekyBear on Sunday March 20, 2022 @03:09PM (#30745589)
Doesn't power leakage get much, much worse as temperature increases?
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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by jleahy on Sunday March 20, 2022 @07:31PM (#30747936)
Yes it does, but that just means you want to use as little power as possible (which is presumably already the case).

That effect is actually so bad that I have previously experienced thermal runaway due to it (more power => higher temperature => more power => …)

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