Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Does it drain more energy when screen is white?

21 Dec 2011   #1

Windows 7 ultimate x64
Does it drain more energy when screen is white?

Hi. I have laptop with 1366x768 LED backlit monitor. I would like to ask, does it drain more energy if wallpaper is white, or it doesn't mater if your wallpaper is white or black, it still will drain same ammount of energy? (I am not talking about brightness, I am talking about colors).

My System SpecsSystem Spec
21 Dec 2011   #2

Windows 8.1 Pro RTM x64

There will be a slight increase in energy consumption with white wallpaper as compared to black. This is because the transistors which control the RGB pixels will need to be switched on (and thus use energy) rather than off. The LED backlight will consume the same amount of energy regardless, unless your monitor has dynamic brightness/contrast (in which case the energy consumed by the backlight will vary according to the screen content). Regardless of this, the backlight will be fully energised for a white screen.
My System SpecsSystem Spec
21 Dec 2011   #3

Windows 10 Pro (x64)

Actually it depends how the backlight is. If every pixel has its own LED RGB color then maybe. But if it is just a white LED blacklight that is dispersed across the back then no not really. You can easily test this by putting a completely black background on your screen, if it glows then you have a white LED that disperses across the back of your screen.
My System SpecsSystem Spec

21 Dec 2011   #4

Windows 7 Home Premium 64bit

Agree with Dwarf.
In theory it probably would.

Remember, Black is not really a color, but the abscence of all color.
White is the presence of all color.

So for a monitor, the pixel would need to be switched completely off to show Black, and switched completely On to show White.
Any other color such as Blue,Green Yellow etc would be a state somewhere between completely Off and completely ON.

Although Im not sure the difference in power consumption would be much of anything to even worry about. Especially with a LED.
My System SpecsSystem Spec
22 Dec 2011   #5
3D Jed

Windows 7 pro x64 SP1

A few years ago (before LED screens) there was a project to get people using a black version of Google to save energy. Probably works with CRT monitors . . .

About Blackle - Energy Saving Search
My System SpecsSystem Spec
22 Dec 2011   #6

Windows 7 ultimate x64

Thank you for your answers :)
My System SpecsSystem Spec
22 Dec 2011   #7

Windows 7 Ultimate 64bit

Dark images consume more power on an LCD screen.
so if your wallpaper is black, you will use more power.
My System SpecsSystem Spec

 Does it drain more energy when screen is white?

Thread Tools

Similar help and support threads
Thread Forum
White stripes on the screen while booting then blue screen.
I didn't really know where to post this. I'm new to this forum and I got a problem with my very old and bad PC. Specs: (don't laugh) Motherboard: Leonite-GL8E / ASUS P5LP-LE / leonite 5.00 CPU: Intel Pentium D 915 2.8GHz RAM: 4GB GRAPHIC CARD: Idk how to check this without turning the pc as...
Graphic Cards
Windows Energy Screen Saver - Restore
How to Restore "Windows Energy Screen Saver" Back in Windows 7 and Windows 8 This tutorial will show you how to restore the Windows Energy screen saver back into Windows 7 and Windows 8. You must be logged in as an administrator to be able to do the steps in this tutorial. EXAMPLE:...
Why am I having white screen?
My HP laptop does boot but a white screen shows up. After a while the screen gradually turns black and some blue and green vertical lines shows up. I know something is wrong with the graphic card but I had the same issue with my acer laptop 2 months. Why the laptops am I using keep getting damaged...
Graphic Cards
White Screen....
This is strange and I am not very computer literate but radomly my internet browser and other files like games get a white screen. Let me give you a few example, I was on the BBC News site and it had an audio file on, my screen went white and crashed the IE/Firefox/chrome. I opened a game installer...
Browsers & Mail
White screen
Hello, I purchased 2 oem copies of w7 and installed them both on seperate pcs, one was an upgrade and the other was a clean install. After 2 days the clean install was giving me white screen every 5 minutes or so and now after about 5 days the upgrade is now doing the same thing. Does anyone know...
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 14:23.
Twitter Facebook Google+