Relative Value of PGDP-11 CPUs; Was Re: Guys take a look...

From: Jerome H. Fine <>
Date: Fri Apr 19 08:35:21 2002

>Doc wrote:

> > On Thu, 18 Apr 2002, Jerome H. Fine wrote:
> > Now the M1 is definitely faster, although I would not necessarily believe
> > the estimate that Mentec provides - DEC also used to exaggerate the
> > speed of a new board. Also, does anyone know the cost of the M1?
> I dunno, but I now know what a standard DEC 11/93 board is worth.
> Somebody offered me a TQK50 _and_ an RQDX3 for a KDJ11-EB this week. He
> says he also has a KA650, but couldn't quite trade straight across for
> that.... Doc - fairly disgusted, greatly amused.

Jerome Fine replies:

I suspect that if you did make such a trade and then offered to make
a trade based on 2 * (TQK50 + RQDX3) for one KDJ11-EB, the
offer would be refused. That KDJ11-EB is still worth a fair bit.

So while I did not use the "insulting" word, I don't think you have
been offered a reasonable trade - in fact when I think about "insulting"
as a description, I suggest that "stealing" might be a better description.

But, then it is still just an 11/93 and unless you MUST have real
PDP-11 hardware, it still runs at the speed of an 11/93 as compared
to Ersatz-11 on a Pentium IV 2 GHz which will be about 20 times
as fast. For development work, Ersatz-11 is usually OK, but I know
of an application where even a PCI <=> Unibus Adapter used with
Ersatz-11 does not work correctly.

Sincerely yours,

Jerome Fine
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Received on Fri Apr 19 2002 - 08:35:21 BST

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