Are there any 24" mid end monitors that aren't a power hog and blast furnace?

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videobruce

Limp Gawd
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Jan 21, 2005
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I have a Dell 2408 and at 100+ watts along with the heat it throws, I'm really unhappy with this.
I looked at many of the same size monitors at the time and they seem to suffer the same issue. For a LCD, these things are nothing but power hogs and a heat exchanger! I thought that went out with CRT's. :mad:

I had a Planner 19" LCD for many years (mid end panel), The thing only drew 35 watts and you hardly fealt any heat off the top of it. :)

I understand 24" is larger, but 3x the power comsumption and the associated heat to go along with it is unacceptable, especially in this day.

One small solution; there isn't a backlight control which would help this and in another way; it's too bright.

Anyone do any 'green' shopping lately?? :eek:
 
There is a backlight control, that is what brightness does. Plug it into a power meter and you will see the power drop when you turn down the brightness.

One alternative is to get a cheaper panel with a lower powered backlight. The Dell is 400-500cd/m2 unit. The Benq 2400s use a 250cd/m2 unit. About half the power/brightness.
 
There is a backlight control, that is what brightness does.
Click to expand...
Nope. Not the same thing! That 'brightness' control just changes the LCD array setting. Nothing is done to the backlight, at least I never saw one that had an effect. It surely doesn't do anything here. I have a HP/Sharp HDTV that has a adjustable backlight and I can see the difference measuring the current consumption. No change when just the brightness is adjusted.
Measure the current consumption while you adjust your brightnes control and tell me how much it changes.
This is a CRT I'm talking about.
 
Hey aardvark, just go play with your ipod's and iphone's. No one asked you.
(approate name for someone that posts comments as that)
 
videobruce said:
Nope. Not the same thing! That 'brightness' control just changes the LCD array setting. Nothing is done to the backlight, at least I never saw one that had an effect. It surely doesn't do anything here. I have a HP/Sharp HDTV that has a adjustable backlight and I can see the difference measuring the current consumption. No change when just the brightness is adjusted.
Measure the current consumption while you adjust your brightnes control and tell me how much it changes.
This is a CRT I'm talking about.
Click to expand...

You are mistaken. That may be the way it works on a TV, but on LCD monitors, the brightness control is the backlight control.

I have owned the Dell 1704fp, 2405fpw, 2007fp and 3007-HC each worked the same way.

I have a power meter and I did test this recently. I have verified a power drop of about 50% between minimum and maximum brightness.

Currently I only have the 1704fp, but if you don't believe me I can post pictures of the results of Max vs Min brightness from my power meter. (IIRC it was ~30W vs 15W). Can you do the same for the 2408?

The 24" dells are still too bright even on ZERO IMO. This issue is rampant in the industry. That is why I like mentioning the Benq 2400s. They have a nice reasonable backlight that consumes about half the power and goes low enough in brightness to suit almost everyone.
 
I stand corrected, but to a point.
There is a small difference, but no where as much as on some HDTV's. The reason I didn't orginally see it is you have to take the brightness all the way down to zero to have a substantial drop in current.
It was a 50 watt difference between 100 and 0. Drawing around 50 or 60 watts with a black screen still qualifies it for a power hog.

Back to my orginal questions;
Do any have backlight controls that aren't TN panels and have components inputs (added)?
 
Wait for OLED? I dunno when they're going to start making them mainstream. Only one I know of is Sony's 11" display for $2500 lol. My 30" puts off a lot of heat too, I just deal with it. I bought watercooling so I could run my computer at 27C or 80F anyway.
 
I measured my 245BW (24" Samsung) as pulling 46 watts - I have it set pretty bright.

A little warm on the top back but not what I would call "Hot" by a long shot.
 
samsung 245bw here also...pulling 34 watts @ 20 brightness, 66 contrast. pulls 77 @ max brightness, which is staring-at-the-sun bright for me
 
I have two LG L246WPs and I think you could accidentally confuse them with a space heater. Sometimes when I touch the top of the back vent thingy, they are almost too hot to touch. My brightness is almost all the way up. Oh well, they are amazing in the winter. I could live with my room being 85 for a couple months a year... right? :rolleyes:
 
I bought a 26in Jan-feb, but my power bill is the same.
Calibrated, you'd be lucky to use 50-60w, IOW, a non-issue:eek:
 
Wow, I've got a Hanns-G 28" and it's not even warm to the touch at 40 brightness. The back vent, which is partially obstructed by the hutch on my desk, isn't even putting out any heat.
 
Here are some comparos:

http://www.digitalversus.com/duels.php?ty=6&ma1=88&mo1=342&p1=3161&ma2=36&mo2=391&p2=3637&ph=14

http://www.digitalversus.com/duels.php?ty=6&ma1=88&mo1=342&p1=3161&ma2=36&mo2=387&p2=3580&ph=14

http://www.digitalversus.com/duels.php?ty=6&ma1=88&mo1=342&p1=3161&ma2=48&ph=14

TNs typically have the lowest power usage and heat generation of all monitors. I'm not sure if PVA or IPS is worse, but both use a fair bit more power than the TN screens. The backlight does consume some of that extra wattage and it does hit you right in the face. I have an IPS monitor as my main screen and alternate between an MVA and TN screen beside it for console use, and in the summer I almost have to use the TN screen because it runs a LOT cooler.

I includes some examples of "greener" screens for you to compare to the Dell...

videobruce said:
I have a Dell 2408 and at 100+ watts along with the heat it throws, I'm really unhappy with this.
I looked at many of the same size monitors at the time and they seem to suffer the same issue. For a LCD, these things are nothing but power hogs and a heat exchanger! I thought that went out with CRT's. :mad:

I had a Planner 19" LCD for many years (mid end panel), The thing only drew 35 watts and you hardly fealt any heat off the top of it. :)

I understand 24" is larger, but 3x the power comsumption and the associated heat to go along with it is unacceptable, especially in this day.

One small solution; there isn't a backlight control which would help this and in another way; it's too bright.

Anyone do any 'green' shopping lately?? :eek:
Click to expand...
 
Tested my new V2400W. It is sucking down 30 watts and barely warm to the touch.
 
I have a Sceptre 24" cheap-ass TN panel, still 1920*1200 though.

Pulls 30W at maximum brightness! (Measured using a UPS not a cheap kill-a-watt).
 
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