PDP 11/70s For Sale

From: CLASSICCMP_at_trailing-edge.com <(CLASSICCMP_at_trailing-edge.com)>
Date: Fri Sep 24 08:26:12 1999

> But I have no idea how big this 11/70 would be?

A couple of points:

1. The 11/70 CPU itself weighs 400-500 pounds, in its cabinet with
power supplies. Several fairly hefty guys can roll a CPU around
and tip it into a trailer, for example. (Hi Elmo!)

2. An 11/70 by itself is pretty much useless. There's no memory
inside the CPU box (in a "conventional" configuration) and there's
no peripherals either.

3. Memory boxes weigh about 80-100 pounds each. A fully equipped
system with core memory boxes (2 Mwords of core) requires 8 memory
boxes. Solid state memory is more dense, and depending on exactly which
generation of memory boards you might only need two memory boxes
for a usable configuration.

4. Now you need peripherals. You'll almost certainly need a
BA11 Unibus box tacked onto the CPU, this is another 70-80 pounds.
And Massbus disk drives (as were mentioned in the original post)
are the size of a washing machine and weigh several hundred pounds.
You'll need at least two disk drives for any real usage.

 Tim Shoppa                        Email: shoppa_at_trailing-edge.com
 Trailing Edge Technology          WWW:   http://www.trailing-edge.com/
 7328 Bradley Blvd		   Voice: 301-767-5917
 Bethesda, MD, USA 20817           Fax:   301-767-5927
Received on Fri Sep 24 1999 - 08:26:12 BST

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