< Dual processors? Another I've never heard of. My 8086 databook says < that up to four can be wired together, but I've never heard of anyone < doing it. Did this particular one work well? You could do more than four, it took a little more work as the simple parts to do it were roll your own and it was pretty impressive. later on NCR would have a box with 4 486/50s and it could wail. Allison