A graphics processing unit usually referred to as a GPU, is a single-chip computer processor that is used to boost the performance of video and graphics on a computer or mobile device. Graphics processing units are used to improve performance for graphics, which can improve the speed that graphics are displayed for both games and videos.
How Does a GPU Help?
Most computers use the CPU, or processor, to do the calculations necessary to draw information on the screen of the computer or device. For many applications, the screen doesn't change very much. for example, in a document when you type, most of the computer screen stays the same, only the characters you type create a need to display new information on the screen. Some types of applications, such as a video game or video files require constant updating of the display. These are considered to be “graphics-intensive” applications.
The computer's processor, if it's powerful enough, can perform all the calculations for any application, but some of the graphic-intensive applications may be too much work for it to do by itself, which means it may not have enough capability to run intensive graphics.
Think of it like driving your car up a steep hill. With only you in the car, your car might be able to reach a certain speed going up the hill. Put a few additional passengers in the car, and it won't be able to get up the hill as fast.
When your computer or mobile device is running an application or communicating with the Internet, it takes some processing power to do these tasks. Add on another passenger load, as we did with your car, and the additional graphics work may cause your computer to slow down and could affect how fast the display is updated. Hence, the need for a graphics processor, which acts as a booster for the added graphics necessary to keep the display snappy and quick.
Here's a common situation with a computer, playing high definition videos and modern games. These are two tasks that the computer's processor if it's not fast enough, will struggle to handle. It may be able to perform these tasks, but the display will be slow, sluggish, and unimpressive in appearance.
By using a dedicated graphics processing unit your computer, laptop, or mobile device will handle more demanding graphics applications, making your display refresh fast and playing videos smoothly.
Built-in and Upgrade
Mobile devices often use a processor where the graphics capabilities are designed into the main CPU, so it already includes a built-in graphics processing unit as part of its design. Desktops and laptops, and even some tablets and smartphones use a graphics processing unit, which can often result in visible improvements in performance.
For desktop computers with a case that opens, an add-on graphics circuit can be installed. The add-on graphics processing unit circuit results in improved graphics performance.
The additional graphics processing unit is a separate circuit card that plugs into a slot in the computer's main chassis. The addition of a GPU adds a second computer to the chassis, which requires additional power and cooling. More powerful graphics processing is often the reason one model of computer is more expensive than another since it requires a larger power supply, more fans for cooling, and if it's a laptop or smartphone, more expensive materials for the internal components since the device runs at a higher temperature.
History of the GPU:
The first graphics processing unit came out in 1999. There was only a small demand for a GPU in its first few years of existence, but the increase in high-quality computer games led to rapid improvements in GPU technology. With users playing games, editing video files, and watching a lot of TV or movies on their computer, it was necessary to develop sleek, high performance, and high-efficiency graphics processing units.
Do you need a graphics processing unit?
There are many desktops and laptops that do not come with a graphics processing unit, and their users may not care. If you use your computer for basic tasks such as surfing the internet, listening to music, writing Word or Excel documents, and watching YouTube videos, you may not need a GPU. Most recent computers and smartphones all have processors that are capable of playing high-definition videos smoothly.
To my way of thinking.
If you are going to create graphics, edit photos or videos, or play recently released games where a graphic processor unit is recommended, then you should buy a computer with a graphics processing unit.