Power Saving

Post by **Inspector** » Thu Jul 19, 2007 2:16 pm

I have no idea if this is fact or not, you decide!

Once you go black you'll never go back........the Google way

When your screen is white - an empty word page, or the Google page, your computer consumes 74 watts, and when its black it consumes only 59 watts. Mark Ontkush wrote an article about the energy saving that would be achieved if Google had a black screen, taking in account the huge number of page views, according to his calculations, 750 mega watts/hour per year would be saved.

In a response to this article Google created a black version of its search engine, called Blackle, with the exact same functions as the white version, but with a lower energy consumption, check it out.

http://www.blackle.com

Noon416 · Post by **Noon416** » Thu Jul 19, 2007 4:03 pm

The flaw in their plan is that LCD screens are the opposite (white screen = lowest power consumption), and with the growing number of LCD screens verses CRT, they'll start causing more power consumption than they're saving.

Prometheus · Post by **Prometheus** » Thu Jul 19, 2007 5:05 pm

lol, how bizarre

MrBling · Post by **MrBling** » Thu Jul 19, 2007 7:25 pm

Prometheus wrote:lol, how bizarre

How Bizarre? http://youtube.com/watch?v=TfJe8hQ8ha0

s0cks · Post by **s0cks** » Fri Jul 20, 2007 10:03 am

Noon416 wrote:The flaw in their plan is that LCD screens are the opposite (white screen = lowest power consumption), and with the growing number of LCD screens verses CRT, they'll start causing more power consumption than they're saving.

Why does LCD consume more? I would have thought being liquid the power consumption would be the same, so it wouldn't matter if you were black or white.

BAZZIL · Post by **BAZZIL** » Fri Jul 20, 2007 10:13 am

well apparently when the liquid between the panels in an LCD screen is fully twisted or something arather, then the polarisation makes it appear black and to get the liquid molecules fully twisted it requires the maximum voltage for a particular pixel. There's something about it on Wikipedia but basicaly more or less voltage changes how much the liquid crystal molecules are twisted giving a different brightness/colour.

Post by **Inspector** » Fri Jul 20, 2007 10:39 am

See what happens when you get a job at Massey, not only do you become a geek, you also have too much time to surf the net for all that "useful" information.......

Skuzzlebutt · Post by **Skuzzlebutt** » Fri Jul 20, 2007 11:22 am

Very simply...

LCD's use a backlight to create light...this is always on. When an LCD has to display "black" it has to physically manipulate the liquid crystals (by shooting more electricity through them) to stop that light from being seen.

Typhoon · Post by **Typhoon** » Sun Jul 22, 2007 4:34 pm

Skuzzlebutt wrote:Very simply...

LCD's use a backlight to create light...this is always on. When an LCD has to display "black" it has to physically manipulate the liquid crystals (by shooting more electricity through them) to stop that light from being seen.

So you mean "what Bazzil said" :P

Skuzzlebutt · Post by **Skuzzlebutt** » Sun Jul 22, 2007 9:02 pm

Typhoon wrote:
Skuzzlebutt wrote:Very simply...

LCD's use a backlight to create light...this is always on. When an LCD has to display "black" it has to physically manipulate the liquid crystals (by shooting more electricity through them) to stop that light from being seen.

So you mean "what Bazzil said" :P

What Bazzil said...but in plain English so it makes sense...

Post by **Inspector** » Wed Aug 08, 2007 11:10 am

http://www.stuff.co.nz/4149194a28.html