On Tue, Sep 30, 2025 at 4:47 PM Michael Stone <[email protected]> wrote: > > On Tue, Sep 30, 2025 at 01:25:06PM -0400, Jeffrey Walton wrote: > >The 80-bit, 128-bit, 256-bit, 512-bit and friends are the size of > >registers in coprocessors, like the x87 math coprocessor, the SSE > >coprocessor, the AVX coprocessor, etc. > > None of those are coprocessors on amd64; x86 hasn't used math > coprocessors since the late 80s. So this is a matter of choosing to > ignore parts of the CPU because they don't fit the model. :)
Agreed. They are internal data paths on the CPU die nowadays. Jeff
