Monitor Power Usage: Check Your PC’s Power Consumption

As technology advances, we find ourselves relying more and more on electronic devices like our monitors.

An essential component of our computers is the monitor, that crucial piece of hardware that displays all the data we need.

But how much power does a monitor use?

And how can this impact your energy bills? We’ll simplify all of this in our guide.

What is Power Usage?

Before diving into the specifics, let’s define power usage. It refers to the amount of electricity an electronic device consumes while turning on.

It’s usually measured in watts (W). A higher wattage means the device uses more power.

Understanding your monitor’s power usage can help you control your electricity costs.

PC Monitor Power Usage

1. CRT Monitors

Remember the bulky computer monitors from years ago? Those are called CRT (Cathode Ray Tube) monitors.

They’re not commonly used today, but some people still have them. A typical CRT monitor can consume around 60 to 120 watts.

2. LCD Monitors

LCD monitors replaced CRTs because they are lighter, take up less space, and are more energy-efficient.

An average LCD monitor uses about 20 to 50 watts.

3. LED Monitors

LED monitors are even more energy-efficient than LCDs.

They use about 20 to 30 watts, significantly less than their predecessors.

4. Size and Resolution Matter

The size and resolution of your monitor also affect power consumption.

Larger monitors and higher resolutions use more power. For instance, a 22-inch LCD monitor will use more power than a 17-inch one.

Similarly, a 4K monitor will use more power than a Full HD monitor because it displays more pixels.

How to Reduce Monitor Power Usage

1. Power Saving Modes

Most monitors have power-saving modes.

When your computer is inactive for a certain period, your monitor can automatically reduce its brightness or even turn off to save power.

2. Lower Brightness

The brighter your monitor, the more power it consumes. Lowering your monitor’s brightness can help reduce power usage.

3. Turn Off When Not in Use

It seems obvious, but many forget to turn off our monitors when not using them.

Doing so can save a significant amount of power.


Ques 1: How much power does a gaming monitor use?

Ans: Gaming monitors consume more power due to their high refresh rates and resolutions. Depending on the model, they can use between 30 to 100 watts or more.

Ques 2: How much power does a monitor used in standby mode?

Ans: A monitor uses very little power in standby mode, usually less than 1 watt.

Ques 3: Is it better to turn off the monitor or use a screensaver?

Ans: It’s better to turn off your monitor when not in use. Screensavers were designed to prevent image burn-in on CRT monitors, but modern monitors do not have this issue.

Screensavers can use more power than normal operations.

Ques 4: How much does it cost to run a monitor?

Ans: The cost of running a monitor depends on your electricity rates and how long the monitor is on.

For example, if you have a 30-watt monitor and use it for 8 hours a day, the annual cost (assuming an average electricity rate of $0.12 per kilowatt-hour) would be around $10.50.


In conclusion, monitoring power usage may seem small but can significantly impact energy costs.

By understanding how much power your monitor uses and how to reduce it, you can positively impact your wallet and the environment.

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Manvendra Singh
Manvendra Singh

Hi, I am John Williams. Editor-in-chief of the website Here I write about PC technology & Guides.