How Much Power Does a Monitor Use?

Your computer system needs to be accompanied by a monitor for proper and efficient functioning. In addition to being a little more expensive than other computing devices, monitors vary significantly in the power they consume to function.

Before investing in a high-quality monitor, it’s crucial to determine the power it uses to decide whether or not you can afford it. 

Generally, a monitor uses power ranging from 65 watts to 250 watts. But this is not it. This power consumption varies greatly depending on the type of monitor you own.

Numerous monitors in the market are pretty power efficient, saving you a lot on electricity bills. 

To avoid all the confusions you might have, I will take you through a guide explaining the power usage by monitors depending on their display sizes, types, and other factors. 

Power Consumption By Monitors Based on Their Display Sizes 

The first factor I will discuss with you that affects the power consumed by a monitor is its display size. Keep reading to determine the power in watts used by different monitors you deal with daily.

  • How much power does a 24-inch monitor use?

The power consumed by a 24 inches monitor generally lies between 20 to 30 watts. This comes up to be around 0.17 to 0.24 amperes and is affected by the usage time of the monitor as well. 

  • How much power does a 27-inch monitor use?

A 27-inch monitor uses the power of around 90W, especially when using the monitor at full brightness.

This power consumed by the monitor also depends on multiple other factors, including the power used by the games you are playing on the monitor, its usage time, and others. 

  • How many watts does a 32-inch monitor use?

The 32-inch monitor is the most suitable and ideal display size you can ever get your hands on, especially for gaming. The power consumption of a 32-inch monitor lies anywhere from 65W to 85W. 

Power Consumption By Monitors Based on Their Types 

As I have already presented a breakdown before you regarding the power used by monitors based on their sizes, now I will look at the different types of monitors and how they differ based on their power consumption. 

  • CRT Monitors

The first type of monitor is the CRT monitor, which was pretty famous in the early 2000s. Another name for this monitor is VDU, short for Visual Display Unit.

The CRT monitors use cathode ray tubes for image projection. This tube is also commonly known as a picture tube. 

CRT monitors are like the older televisions that were bulkier and consumed too much energy. A standard 19-inch CRT monitor can consume around 100 watts of power. 

  • LCD (Liquid Crystal Display) Monitors

LCD screens are one of the few monitor screens used in recent times. These monitors use monochrome pixels and are much more compact than CRT monitors.

The monochromatic pixels in LCD are arranged in a systematic order, and when they come between electrodes and polarizing filters, the image is projected on the screen. 

The graphics and image quality provided by an LCD monitor are way better than what a CRT monitor shows and being compact and sleek in design, they don’t take up too much space.

Fortunately, LCDs don’t take up too much power, and a 19-inch LCD consumes only 22 watts of power. 

  • LED (Light Emitting Diode) Monitors

The technology used in light-emitting diode monitors is way more advanced than that used in LCDs. The panel used in LED monitors is flat and sometimes a little curved too.

Compared with LCD and CRT monitors, the power consumed by an LED monitor is much less. 

One significant aspect of the LED monitors is their high durability compared to both the monitors I have talked about earlier.

Also, the heat generated by LED monitors during their functioning is pretty negligible. A typical 19-inch LED monitor consumes only 20 watts of power. 

  • Plasma Monitor

This is another significant type of monitor used in modern times. A plasma monitor is a plasma panel with gas-filled cells between two parallel glass surfaces.

These monitors function by the glow of the phosphor used under the effect of ultraviolet radiation. 

Though these monitors are a little expensive compared to all other monitors I have discussed above, the display, resolution, and all other features it offers ultimately justify the price.

A 19-inch plasma monitor consumes over 38 watts of power. 

Last Thoughts 

Through this guide, I have tried to throw light on all the prominent features that majorly affect the power consumed by a monitor. You must have had a better idea about how the size and type of monitor affect the power it uses.

But one thing you don’t have to worry about now is that none of the monitors I mentioned here consumes too much power. So, you can get a monitor the earliest without worrying much about your electricity bill. 

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