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.
Comment on Why we don't have 128-bit CPUs
just_another_person@lemmy.world 4 months ago
Is this a question?
We haven’t even come close to exhausting 64-bit addresses yet. If you think the bit number makes things faster, it’s technically the opposite.
Technus@lemmy.zip 4 months ago
just_another_person@lemmy.world 4 months ago
[deleted]MrQuallzin@lemmy.world 4 months ago
I think they were just adding to the conversation
Technus@lemmy.zip 4 months ago
I actually added detail that wasn’t already discussed in the article?
AlphaAutist@lemmy.world 4 months ago
I actually didn’t know that about addressing before your comment and so I found it very interesting, thanks
Voroxpete@sh.itjust.works 4 months 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.
Cocodapuf@lemmy.world 4 months 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.”
mitrosus@discuss.tchncs.de 4 months ago
Learned from the teacher. Thanks.
Cethin@lemmy.zip 4 months 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.
sugar_in_your_tea@sh.itjust.works 4 months ago
And you can get 128-bit data to the CPU, so those things can be fast if we need them to be.
henfredemars@infosec.pub 4 months 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.
otp@sh.itjust.works 4 months ago
Is this a question?
Woah, meta.
Yes, it is.
This is not a question, though.
jwr1@kbin.earth 4 months 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.
fmstrat@lemmy.nowsci.com 4 months ago
Comment OP must never learn anything new. Good find.