Comment on Why we don't have 128-bit CPUs

just_another_person@lemmy.world ⁨1⁩ ⁨week⁩ ago

• jwr1@kbin.earth ⁨1⁩ ⁨week⁩ ago

  It's a link to an article I found interesting. It basically details why we're still using 64-bit CPUs, just as you mentioned.

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  • fmstrat@lemmy.nowsci.com ⁨1⁩ ⁨week⁩ ago

    Comment OP must never learn anything new. Good find.

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• Technus@lemmy.zip ⁨1⁩ ⁨week⁩ ago

  We don’t even have true 64-bit addressing yet. x86-64 uses only 48 bits of a 64 bit address and 64-bit ARM can use anything between 40 and 52 depending on the specific configuration.

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  • just_another_person@lemmy.world ⁨1⁩ ⁨week⁩ ago

    [deleted]

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    • MrQuallzin@lemmy.world ⁨1⁩ ⁨week⁩ ago

      I think they were just adding to the conversation

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    • Technus@lemmy.zip ⁨1⁩ ⁨week⁩ ago

      I actually added detail that wasn’t already discussed in the article?

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      • AlphaAutist@lemmy.world ⁨1⁩ ⁨week⁩ ago

        I actually didn’t know that about addressing before your comment and so I found it very interesting, thanks

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    • b34k@lemmy.world ⁨1⁩ ⁨week⁩ ago

      [deleted]

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      • just_another_person@lemmy.world ⁨1⁩ ⁨week⁩ ago

        [deleted]

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• Voroxpete@sh.itjust.works ⁨1⁩ ⁨week⁩ ago

  Is this a question?

  For the people who don’t know the answer? Yes.

  Not everything you see is intended for your consumption. Let people enjoy learning things.

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  • Cocodapuf@lemmy.world ⁨1⁩ ⁨week⁩ ago

    I know a teacher who who likes to say:

    “I believe there really is no such thing as a dumb question. As long as it’s an honest question (not rhetorical or sarcastic), then it’s a genuine request for more information. So even if it’s coming from a place of extreme ignorance, asking a question is an attempt to learn something, and the effort should be applauded.”

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    • mitrosus@discuss.tchncs.de ⁨1⁩ ⁨week⁩ ago

      Learned from the teacher. Thanks.

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• Cethin@lemmy.zip ⁨1⁩ ⁨week⁩ ago

  Yeah, 64 bit handles almost all use cases we have. Sometimes we want double the precision (a double) or length (a long), but we can do that without being 128-bit. It’s harder to do half. Sure, it’d be slightly faster for some things, but it’s not significant.

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  • sugar_in_your_tea@sh.itjust.works ⁨1⁩ ⁨week⁩ ago

    And you can get 128-bit data to the CPU, so those things can be fast if we need them to be.

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    • henfredemars@infosec.pub ⁨1⁩ ⁨week⁩ ago

      And we have wide instructions that can process this data, such as for multimedia applications.

      Addressing and memory size has been the historic motivator for wider registers, but it’s probably not going to be in my lifetime that I see the need for 128.

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• otp@sh.itjust.works ⁨1⁩ ⁨week⁩ ago

  Is this a question?

  Woah, meta.

  Yes, it is.

  This is not a question, though.

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