DIGIT-ARC read-only archive · snapshot: July 23, 2026

Power consumption of CRT v/s LCD??????

9 posts · originally from https://geek.digit.in/community/threads/power-consumption-of-crt-v-s-lcd.63350/

pushkaraj
pushkaraj Original post #1
Jul 19, 2007 at 9:41 AM
I want to knw wat exactly is the power consumption of a CRT monitor as compared to dat of an LCD:?:
zyberboy
Jul 19, 2007 at 9:58 AM
CRT 15-17inch = 70-80 watts
LCD 15-17inch = 25-35 watts
pushkaraj
Jul 19, 2007 at 10:01 AM
OMG dats a huge difference!
But then how much does it really reflect in the bill:confused:
zyberboy
Jul 19, 2007 at 1:24 PM
pushkaraj said:
OMG dats a huge difference!
But then how much does it really reflect in the bill:confused:
Calculate ur computing hrs, i am too lazy to do maths:)
Akshay
Akshay #5
Jul 19, 2007 at 1:56 PM
On my LG 15" LCD it is mentioned dat it consumes 17W only. Definitely it wil help u save on electricity. I cud estimate dis coz my UPS backup time has gone considerably up.
freshseasons
Jul 19, 2007 at 2:07 PM
Using one CRT Monitor with Power TurnOFF after 5 mins of idle time isnt going to show much difference in your bills.
But LCD helps in prolonging the life of UPS charge .So theres definite advantage to using one for power saving.
However if you have more than 2 LCD's then it will be worth calculating the electricity bills.!
S
Jul 19, 2007 at 4:01 PM
I made a rough estimate once recently that the cost difference between LCD and CRT monitors would be offset by the savings in electricity (assuming about 8 hours of use a day) in more than 5 years only (If I remember correctly, it was closer to 10 years)

Arun
pushkaraj
Jul 19, 2007 at 7:16 PM
cyberboy_kerala said:
Calculate ur computing hrs, i am too lazy to do maths
Hey sorry for bugging you about that:D Actually i was not getting the correct kWh calculations:(

I googled and came across this site:
:arrow:*www.bestundertaking.com/elec_consump.asp

The site has a table. But I am unable to figure out what are they talking about in the third column.
Code:
No. Of Units For Month Of 30 Days
No. Of Hours Per Day
Please help me...
S
Jul 19, 2007 at 7:54 PM
See the heading has actually three lines... The third line is like 1,2,4,... This represents no. of hours per day usage... In the corresponding column, you will find usage per month for the required items...

Arun