Re: Power Consumption

Dr. Dweeb wrote:

JF Mezei wrote:

Stephen Hoffman wrote:


"The power required to run an LCD is about one-third of that required for a CRT with the same screen area. In addition, the amount of heat generated by an LCD monitor is considerably less than a CRT monitor, resulting in a lower load on air conditioning."

http://www.viewsonic.com/monitoruniversity/lcd.htm


Is it?

I've got a 17" LCD and it draws according to my power meter around 50-70 watts when illuminated. OK, less than my CRT, but how much in terms of earth resources did each take to create, never mind the running costs. Its more than I expected and I've no reason to think my meters reads differently for this when other (known) wattages are correctly displayed on my device.

Just in case you're wondering these devices have a series of fluorescent tubes to back light the display, and there is an inverter to raise the voltage to that needed to illuminate the tubes. Low voltage equipment is worse for power conversion.

Very large plasma and LCD screens (yes I know it's different technology) comparatively consume more power than traditional CRTs in practice, why the heck do plasmas have fans in the back? We all know about the multi media centre of the future, but doubling as a room heater?

Save power SWITCH IT OFF, simple!

I thought data centres were supposed to be lights out anyway, surely that includes the monitors?

Nic
--
aka. Mr. C. P. Charges, nclews "at" csc dot c o m
.

Relevant Pages

  • Re: Which type of Monitor
    ... >> monitor? ... >> explore LCD. ... > I really want to replace CRT with LCD, and I have looked at many> different ... > portrait and zoom in 100-300% to work on skin-texture etc. and the DOT> on ...
    (alt.photography)
  • Re: The State of the Beagle and RISC OS
    ... But the signal going into the monitor itself, the signal *driving that monitor* - is it digital, or analogue? ... Meanwhile, everyone else in this thread refers to the kind of signal going down the cable, because pointing out that the display source is digital is rather pointless - there aren't many analogue computers with VGA or DVI outputs. ... I've also used 1280x1024 LCD monitors, NEC again, which were also excellent and exhibited similar viewing angles to the above. ... it would be a bit less portable if it had a 13" CRT attached to the keyboard and I reckon the battery life wouldn't be so good. ...
    (comp.sys.acorn.hardware)
  • Re: Which type of Monitor
    ... >> monitor? ... >> explore LCD. ... > I really want to replace CRT with LCD, and I have looked at many> different ... > portrait and zoom in 100-300% to work on skin-texture etc. and the DOT> on ...
    (alt.photography)
  • Re: Which type of Monitor
    ... >> monitor? ... >> want to explore LCD. ... CRT. ... Great for photos but bad for trying to use windows without a magnifying glass. ...
    (alt.photography)
  • Re: choosing a monitor for your pc is becoming so confusing
    ... >>> is best when buying a monitor and i now realize why this ... >> Why do you see a CRT as out of the picture? ... > LCD, because they're being pushed as "all the cool kids have them". ...
    (comp.sys.ibm.pc.games.action)