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Why we don't have 128-bit CPUs
(www.xda-developers.com)
This is a most excellent place for technology news and articles.
Uh, the PlayStation 2 would like a word?
Not true 128 bit. It has 128 bit SIMD capabilities, but that’s about it. Probably mostly because of marketing reasons to show how much better it is than N64 (which also is “64 bit” for marketing reasons).
In that case, we’re having 512 bit computers now: https://en.wikipedia.org/wiki/AVX-512