> > What do apps actually care about > > - MMX > > - Athlon MMX2 > > - SSE > > - SSE2 > > Image manipulation programs need a way to determine the most efficient > algorithm/instructions to use.
Which is down to MMX, MMX2, SSE, SSE2. Take a look at real existing apps like mplayer, mp1e and xine. > Probably not as much here, except as how this info may be used to identify > erratta on a feature that is important to the program. The x86 CPU errata are kernel handled so Im not sure that is actually an issue.
