Linked by Howard Fosdick on Tue 15th Jun 2010 21:06 UTC
Linux All of us who use computers create a problem we rarely consider. How do we dispose of them? This is no small concern. Estimates put the number of personal computers in use world-wide today at about one billion. The average lifespan of a personal computer is only two to five years. We can expect a tidal wave of computers ready for disposal shortly, and this number will only increase. And as if that isn't challenge enough, there are already several hundred million computers out-of-service, sitting in attics and basements and garages, awaiting disposal.
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RE: How exactly is that green
by jokkel on Fri 18th Jun 2010 10:56 UTC in reply to "How exactly is that green"
Member since:

How exactly is that "green"? Ever thought about the poor energy efficiency of that old crap?

Linux is normally worse at using energy saving features of the hardware. Especially on older hardware ACPI support is hit or miss. Generally using Windows could use less energy. Especially if you can use standby, instead of having to leave the computer running all day.

Reply Parent Score: 2

Neolander Member since:

Just turn it off ! It consumes almost infinitely less energy than standby on a desktop computer (Standby energy consumption > 50% power on energy consumption vs power off energy consumption = 2W and less if you unplug the wire, see ).

Standby is a hack which appeared because Windows' startup times were growing more and more unacceptable. If you target power saving, standby is *not* the way to go. Hibernate/suspend to disk is the sole sensible alternative to power off in this area (because components are really unpowered), and even it shares some serious technical drawbacks with standby.

Edited 2010-06-18 11:55 UTC

Reply Parent Score: 2

Neolander Member since:

PS : While you're watching this page, let's compare numbers...

C2D under load : 176W
Athlon XP under load : 190W
C2D idle : 100W
Athlon XP idle : 148W

As you can see, we did not exactly see a major improvement in power consumption for average desktop PCs. Except if you're ready to endure Atom performance, there's only a ~30% improvement.

Moreover, this guy's dirty old laptop consumes 14W to ~30W of power. I bet newer computers do actually far worse than that, considering that in a few years, laptop power supplies went from ~40W max to ~80-120W max...

Recycling older computers sounds actually quite sensible, when you have those numbers in mind. Only the screen issue is questionable (if I remember well, LCD screens are less energy-efficient than CRT screens if they last less than 5 years because of the higher building/recycling cost. It's hence right to ditch a CRT screen and replace it with a LCD screen after 5 years, but not before.)

Edited 2010-06-18 12:09 UTC

Reply Parent Score: 2

jokkel Member since:

Just turn it off !

A huge amount of energy is wasted, because people keep their computers on almost all day. They don't know when they will need it. Just for convenience, because they want to check their Mail, look something up, or check the news.
Turning the computer on and off at every time you need it for 30 secondes to one minute is cumbersome and wasteful.
This is the scenario where standby shows its strength. With working standby the computer can go to sleep after a certain amount of inactivity. But is available again after a few seconds when needed.

This can save a lot of energy.

Reply Parent Score: 2

cerbie Member since:

80+ watts in standby? Er...I think somebody was using S1. S3 is where it's at, is what you should use, and is what most OEM PCs have been coming set up with for the last several years.
Many boards will be higher than 7W, but almost all should be in the <20W range.

Reply Parent Score: 2