> > > 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.
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