[Open-graphics] decoding video in real-time

[Nicolas Boulay]

> > > >   3) wait for AMD to sell a AMD64 30,000+ x16 CPU?
> > >
> > > Impossible, light isnt that fast.
> >
> > IIRC they now have 6000+ x2, so they only have to find a 5x
> > speed improvement.
>
> Yes, but 4GHz is about the limit how fast chips with
> 2x2cm can be clocked. And even that needs very carefull
> design of the clock distribution and signal routing.
> Keep in mind that 2cm is about the distance a signal
> can travel within one clock cycle (depends a lot on
> the actually used wire model). And then you still
> need some safety margin to reliably operate the chip
> under all specified conditions.
>

A pentium 4 use double frequency ALU (this permit to simulate 2 ALU).
Pentium 4 at 3 Ghz exist sine more than 4 years. 3 Ghz cpu imply 6 Ghz
ALU in the pentium 4.