PDP Power Usage WAS: BBS software for the PDP 11

Ali cctalk at ibm51xx.net
Fri May 19 18:18:51 CDT 2017

> ___________________________________
> The plate on the back of my 11/93 says 345 Watts.  That's about a fifth
> what your wifes hair dryer draws.  Or slightly more than 3 100 watt
> light bulbs (which your kids leave on all over the house all the
> time!!) bill
> I run a similar PDP-11/83 system 24/7 on a BA23 in a Pedestal stand. It
> has two 2MB memory boards, an Emulex UC07 connected to two SCSI2SD
> Cards emulating two RD54s and two RA92s, and a DELQA-T running RSX11M+,
> DECnet and Johnny Billquist;s TCP/IP and it draws 100-105 watts on my
> UPS.

Doesn't seem that bad, I am sure some of my vintage servers w/ the 10-12 FH
SCSI drives, "tons of RAM, and four PPro chips are pulling somewhere along
those numbers. I may have to invest in a Kill-a-Watt type device to see for
sure though.


More information about the cctalk mailing list