What is Reponse Time and Refresh Rate of computer monitor?

Every time we choose to buy a new computer monitor for a PC or to expand the workspace, there are many factors that we need to grasp, such as Resolution, aspect ratio, size, … And one of the equally important factors that most people are interested in is response time (also known as recovery time) and refresh rate (screen scanning frequency).

What are the two parameters above and why is it important for a computer monitor? Let’s explore with me right in the content below!

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What is Reponse Time?

Reponse Time, also known as the response time of the screen is the ability to switch from one color to another, usually the light color mode (Fully Active) to the Full Inactive mode like from black to white. then black.

The unit of Reponse Time is counted as ms (milliseconds).

Response time of LCD displays usually less than 10 ms, others are as low as 3ms. Time lower phenomenon is synonymous “Ghost image blur” will not appear, so the video display quality and color, images of the monitor become more beautiful.

However, this calculation does not apply to all monitors. In addition to the above calculation, some manufacturers still calculate over time. black to white then black or gray white gray.

Why does low counter-accretion time provide a better experience?

ips screen

Most of us pay little attention to this parameter of the monitor. When doing editing or editing text, images, writing mail, … color delay is almost so fast that we cannot perceive it, even when we watch videos on devices like TV, PC, Laptop.

But if you are a gamer then everything is completely different, the switching between the images, characters in the game can decide the victory or loss of a match. A little faster response per millisecond can help a sniper take the opponent’s life.

If you are a gamer, choose to buy monitors with these parameters as small as possible, namely, ranging from 1ms to 5ms.

With devices like phones and laptops, we have no choice but to use the default manufacturer’s settings, but if you’re building a PC for gaming, everyone The decision is up to you.

Display panels are available in the market

computer screen

On the market today, 3 popular types of LCD are available: TN (Twisted NIAL), IPS (In-Plane Switching) and VA (Vertical Alignment).

  • Panel type VA: This panel currently has 2 types: Multi-domain Vertical Alignment (MVA) and Patterned Vertical Alignment (PVA). The VA panel is a combination of TN and IPS, so many monitors of this type have an excellent response time of just 1ms.

If you are looking to buy a monitor for gaming needs, choosing to buy a monitor with VA or TN panel will be the best option.

  • IPS panel: This type has stable color, long lifespan and has a fairly wide viewing angle. Currently, IPS is often equipped for monitors for the needs of graphics, photography or other tasks that require high color accuracy.

However, most IPS screens have a fairly high response rate and the price is not “at all” cheap, so IPS is rarely sold on the market as TN or VA screens.

  • Tons of TN screens: This one is very affordable and one of the highlights is that the down time is very low, making it very suitable for gaming needs. However, the TN screen has a narrow angle and poor color gamut, colors will become fuzzy and distorted if we do not sit directly with it.

What is Refresh Rate?

Refresh Rate or refresh rate is the number of frames we get from the screen per second (FPS), and it is calculated by in Hz.

The higher the scanning frequency, the smoother and more beautiful images as well as the realism of the images. Conversely, the lower the frequency of the scan, the more blurred images may appear and the movements will become less realistic, especially fast movements because fine details are not clearly displayed.

An example can be taken as follows: The screen has a frequency of 120 Hz, which means it can display 120 frames per second.

Principle of operation of the Refresh Rate

LCD screen lg

The principle of the Refresh Rate operation is to draw each pixel in turn from left to right in line, from top to bottom until completing a frame.

For gamers, the refresh rate can determine a game’s experience while playing, if the monitor’s refresh rate is X, while the graphics processor (GPU) has frame time. If the image is Y, the result will definitely not be as expected, even causing the situation “saw” good “Tear the screen” (screen tearing) makes the game experience “bad” a lot.

Therefore, currently the manufacturer of video cards (GPU) has developed a number of technologies to integrate into several monitors to bring the best experience to their users. Highlights can be mentioned as AMD with technology FreeSync and NVIDIA with technology G-Sync.

If you want to learn more about what FreeSync, G-Sync, and V-sync are, check out the next article.

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At this point, you should have understood more about 2 quite important parameters Reponse Time and Refresh Rate is not it? Hope this article will bring useful information to you and if you have additional questions or suggestions for the article, do not forget to leave your comments in the comments below.



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