this post was submitted on 23 Jun 2024
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276
Why we don't have 128-bit CPUs (www.xda-developers.com)
submitted 2 months ago by [email protected] to c/[email protected]
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[–] [email protected] 17 points 2 months ago (1 children)

We do. Next question.

[–] [email protected] 3 points 2 months ago (2 children)

Why are we not using them in end-user devices

[–] [email protected] 12 points 2 months ago

We are.

Addressing-wise, no we don't have consumer level 128bit CPUs and probably won't ever need them.

Instructions though, SSE had some 128bit ops (OR/XOR, MOVE) and AVX is 128bit vector math. AVX2 is 256bit vector math, AVX512 is- you guessed it 512bit vector math. AltiVec on PPC had 128bit vectors 20 years ago.

[–] [email protected] 5 points 2 months ago

There's no benefit.