M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs

Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by opisthenar84 on Sunday March 20, 2022 @04:35PM (#30746354)

I remember reading that at 5nm, electron tunnelling through transistor gates would be a major problem. What happened to that?

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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by aunty_helen on Sunday March 20, 2022 @04:54PM (#30746514)

5nm doesn’t mean anything is actually 5nm. It’s the “5nm node”

Marketing dept has trumped physics.

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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by imtringued on Monday March 21, 2022 @03:16AM (#30751155)

That would be the case if 5nm didn't refer to a random feature of a reference planar transistor that is only used to chronologically name the process according to its mathematically equivalent density..

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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by ace2358 on Sunday March 20, 2022 @04:38PM (#30746385)

I think the do funky stuff with the 3D or 2.5D geometry of the gate so that the surface area (between transistors) is larger for a smaller footprint.

Someone correct me if I’m wrong!

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Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by jagger27 on Sunday March 20, 2022 @06:54PM (#30747613)

Yes, that tech is called FinFET and it has been in use for many years. The new hot thing is GAAFET (Gate-all-around FET).

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