CDC 9720-1230 experience - really 7053

[Henry Spencer]

>What this really means is that if you got one of the first few 7053's,
>your best bet is to try it. It may or may not work at the 3.0 rate.

Do remember that just because it works once doesn't mean it will work
consistently and reliably.  Things like temperature changes and component
aging can turn a very small positive margin into a very small negative
one, or no margin at all (which means unreproducible intermittent
failures).  It is not uncommon for chips and boards rated for a given
speed to work at higher speeds when the phase of the Moon is right; the
problem is that the phase of the Moon changes.

                                     Henry Spencer at U of Toronto Zoology
                                 uunet!attcan!utzoo!henry henry at zoo.toronto.edu