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CRT vs LCD monitors
- Thread starter dd1313
- Start date
ok
I found this article..
http://savepower.co.za/tips/replace-crt-computer-screens-with-tft-lcd-screens/
Thanks
DD
I found this article..
http://savepower.co.za/tips/replace-crt-computer-screens-with-tft-lcd-screens/
Thanks
DD
genetic
Honorary Master
LCD displays use less power than CRT displays.
A 21" LCD would use around 55 watts, and a 15" CRT would use around 80 watts.
A 21" LCD would use around 55 watts, and a 15" CRT would use around 80 watts.
CRT uses WAY more than LCD...
In addition, LCD comes in two different variants these days. LED (Light Emitting Diode) backlight and CCFL (Cold Cathode Flourescent ?Lighting?) backlight. The LED backlight saves a lot of power and increases brightness and lifespan (fact) and (they claim) provides better vibrance.
In addition, LCD comes in two different variants these days. LED (Light Emitting Diode) backlight and CCFL (Cold Cathode Flourescent ?Lighting?) backlight. The LED backlight saves a lot of power and increases brightness and lifespan (fact) and (they claim) provides better vibrance.
Terencek
Expert Member
Whether because of the Eskom shena****ns or just to be 'greener', many people are moving towards renewable energy such as (in my own case) solar power. And even now after enjoying solar-powered computing for more than six years, it is astonishing how little electronics sales-staff know (or care) about power consumption!
Overseas there is a move away from standby modes (interestingly, a new Sinotec LCD TV I bought locally has had a full OFF switch added, obviously as an afterthought!).
And almost no computer-shop staff will tell you the most important thing about using a laptop either on renewable energy, or even just when out and about, e.g. from a car or in a caravan off the vehicle battery: that about R150 will buy you a tiny step-up converter to run directly off 12v instead of the hugely-inefficient and wasteful use of an inverter to get from 12v up to 220v and then back down again to the 15 or 19v or so the average laptop needs!
As I also found when looking for a suitable LCD monitor, there is no standardisation on their rear labels when it comes to listing power consumption -- some give watts, others give amperes, and even the manuals don't always list standby consumption.
But to confirm what this thread has already emphasised: LCDs are FAR more efficient than CRTs in power terms; 55w is all you need for an average 19" LCD, where a CRT can draw double that. Laptops are (obviously) more efficient than desktop computers, but an interesting compromise is something like the Asus EEe desktop machine just out, designed to be as frugal as its netbook sibling.
EDIT: why on earth is this forum set to auto-edit the perfectly respectable word shena****ns, as in the first paragraph of this post -- and no doubt in this edit as well!!! Since when did an absolutely respectable word like that take on 'dubious' connotations??!! Mutter mutter mutter.....
Overseas there is a move away from standby modes (interestingly, a new Sinotec LCD TV I bought locally has had a full OFF switch added, obviously as an afterthought!).
And almost no computer-shop staff will tell you the most important thing about using a laptop either on renewable energy, or even just when out and about, e.g. from a car or in a caravan off the vehicle battery: that about R150 will buy you a tiny step-up converter to run directly off 12v instead of the hugely-inefficient and wasteful use of an inverter to get from 12v up to 220v and then back down again to the 15 or 19v or so the average laptop needs!
As I also found when looking for a suitable LCD monitor, there is no standardisation on their rear labels when it comes to listing power consumption -- some give watts, others give amperes, and even the manuals don't always list standby consumption.
But to confirm what this thread has already emphasised: LCDs are FAR more efficient than CRTs in power terms; 55w is all you need for an average 19" LCD, where a CRT can draw double that. Laptops are (obviously) more efficient than desktop computers, but an interesting compromise is something like the Asus EEe desktop machine just out, designed to be as frugal as its netbook sibling.
EDIT: why on earth is this forum set to auto-edit the perfectly respectable word shena****ns, as in the first paragraph of this post -- and no doubt in this edit as well!!! Since when did an absolutely respectable word like that take on 'dubious' connotations??!! Mutter mutter mutter.....
The_Techie
Resident Techie
Yes they do.
Yes, a 21" CRT does use more power than a 15" CRT. However, a 21" LCD should use less power than a 15" CRT.
cerebus
Honorary Master
Oh that's nothing, my wife goes to a mother's forum and when she talks about breast feeding it edits it to 'female appendages'.
Chevron
Serial breaker of phones
Musiclover08
Senior Member
I believe the LCD is much better due to it drawing less current.