From: Garrett D'Amore (garrett@garnet.berkeley.edu)
Date: 04/15/93


From: garrett@garnet.berkeley.edu (Garrett D'Amore)
Subject: Re: Automated Linux PowerDown
Date: 15 Apr 1993 18:02:40 GMT


A couple of things...

1) Monitors consume the lions share of power on a system by far more than any
other peripheral, and *much* more than the CPU.

2) If you figure that much money, you are probably using the power rating of
the CPU. It is important to realize that you probably rarely if ever even
come close to the power rating of the power supply in your CPU unit. (Power
ratings are typically 100-150 watts -- actual consumption is probably less
than 20 watts if you turn off the monitor)

Net result: ALWAYS turn the MONITOR off! They cost lots to keep turned on.
                        Almost never turn the CPU off. There is additional strain on
                        the system hardware, and on the filesystems when you do that.

Incidentally, the EECS department here at UC Berkeley has used that method
to DRASTICALLY reduce their power consumption. Turning the monitors off when
not in use SAVES BIG BUCKS!

====================================================================
Garrett D'Amore | garrett@haas.berkeley.edu
Software Co-Ordinator | 68 Barrows Hall, UC Berkeley
Haas Computing Services | Ph: 510-643-5923 Fax: 642-4769
====================================================================