jwr1@kbin.earth to Technology@lemmy.world · 3 months agoWhy we don't have 128-bit CPUswww.xda-developers.comexternal-linkmessage-square67fedilinkarrow-up120arrow-down10
arrow-up120arrow-down1external-linkWhy we don't have 128-bit CPUswww.xda-developers.comjwr1@kbin.earth to Technology@lemmy.world · 3 months agomessage-square67fedilink
minus-squareJustin@lemmy.jlh.namelinkfedilinkEnglisharrow-up0·3 months agoTons of computing is done on x86 these days with 256 bit numbers, and even 512-bit numbers.
minus-squarepivot_root@lemmy.worldlinkfedilinkEnglisharrow-up1·3 months agoBeing pedantic, but… The amd64 ISA doesn’t have native 256-bit integer operations, let alone 512-bit. Those numbers you mention are for SIMD instructions, which is just 8x 32-bit integer operations running at the same time.
Tons of computing is done on x86 these days with 256 bit numbers, and even 512-bit numbers.
Being pedantic, but…
The amd64 ISA doesn’t have native 256-bit integer operations, let alone 512-bit. Those numbers you mention are for SIMD instructions, which is just 8x 32-bit integer operations running at the same time.