Hi Colin,

>Which machine would be better for running NetBSD?  A Q650 w/ 66MHz '040 or
>a Q700 w/ 40MHz '040?  Would there be a significant (i.e. noticeable)
>difference between NetBSD performance on the 2?
>How much speedup is there from a fast '030 machine to an '040 machine?

As Xiamin and Eric already wrote, the clock info you mention is not quite
correct. The Q700 normally runs at 25 MHz, but can be overclocked reliably
to about 33 MHz. The Q650 as Apple sold it runs at 33 MHz; it can be run
at up to 42 MHz. http://socrates.berkeley.edu/~schrier/mhz.html has info
on accelerating various mac models.

The speedup between a '030 and a '040 machine, comparable clock speeds,
running NetBSD is roughly a factor of three, according to Benoit Martel's
page, http://www.cs.mcgill.ca/~magus/unixbench.html.

Best wishes,

        Nico van Eikema Hommes

--
  Dr. N.J.R. van Eikema Hommes     Computer-Chemie-Centrum
  hommes@ccc.uni-erlangen.de       Universitaet Erlangen-Nuernberg
  Phone:    +49-(0)9131-856532     Naegelsbachstr. 25
  FAX:      +49-(0)9131-856566     D-91052 Erlangen, Germany