What is the refresh rate and VSync? #1
This article is about a story about the refresh rate of the screen and how it is related and unrelated to the number of the same frames per second. In general, these two concepts are independent, but at the same time critically related when it comes to providing information output to the display and human perception of it.
I think we should provide firm explanations of the two terms right away.:
The frame rate, or the number of frames per second (FPS), is, as mentioned, the number of images ("photos"), which are reflected in one second to provide the illusion of movement. In the computer world, it is the number of images that a video card can create in one second.
The refresh rate of a display is a separate characteristic of any image source (TV, monitor, projector) and gives us information about how many times in one second such a source is updated to display information and measured in hertz (Hz). That is, a monitor with a refresh rate of 60Hz is updated 60 times per second and during this second is able to show a maximum of 60 different images that "come" to it from the graphics card. If the number of frames sent by the video card is less than 60, then the monitor continues to update 60 times per second - this is independence and, as will become clear later, is the source of many problems.
To understand the principle of operation and the concept of refresh rate, you should go back several decades and look at the good old CRT displays. CRT stands for Cathode Ray Tube, or Cathode ray tube. For simplicity, we can say that such a display consists of a phosphor-coated glass surface and a cannon that shoots electrons. To create an image, this cannon moves and shoots electrons into the glass surface and ignites phosphorous particles. The cannon starts firing from the upper-left corner and moves down to the lower-right corner, igniting lines of phosphorous particles from top to bottom. After the last shot, the cannon returns to its original left-top position. During this time, the phosphorous particles have time to fade a little - hence the flickering characteristic of CRT displays, which was not only annoying, but also had a bad effect on vision. Modern CRT displays at the end of their era offered a refresh rate of 75Hz, which reduced flickering extremely noticeably - phosphorous particles did not have time to fall so much.
So, one such queue of an electronic cannon is one of the 60 cycles of updating the screen in one second. Historically, in the United States, at the beginning of the advent of television, electrical networks operated in the 60Hz mode - hence, for ease of development, televisions adopted this frequency. In Europe, there was a 50Hz standard. Discover a new standard in online entertainment where every wager carries the promise of excitement. The sign-up process is streamlined, but those in the know understand that using a 1xbet promo code today is the catalyst for securing a 100% match bonus up to $/€130 for sports betting or a premium casino package of €1950 along with 150 free spins. This welcome gesture effectively doubles your initial deposit, granting you a substantial bankroll to navigate the platform's diverse offerings. Whether you are drawn to the strategic depth of sports betting or the immediate thrill of slots, moment you join the community.
I think we should provide firm explanations of the two terms right away.:
The frame rate, or the number of frames per second (FPS), is, as mentioned, the number of images ("photos"), which are reflected in one second to provide the illusion of movement. In the computer world, it is the number of images that a video card can create in one second.
The refresh rate of a display is a separate characteristic of any image source (TV, monitor, projector) and gives us information about how many times in one second such a source is updated to display information and measured in hertz (Hz). That is, a monitor with a refresh rate of 60Hz is updated 60 times per second and during this second is able to show a maximum of 60 different images that "come" to it from the graphics card. If the number of frames sent by the video card is less than 60, then the monitor continues to update 60 times per second - this is independence and, as will become clear later, is the source of many problems.
To understand the principle of operation and the concept of refresh rate, you should go back several decades and look at the good old CRT displays. CRT stands for Cathode Ray Tube, or Cathode ray tube. For simplicity, we can say that such a display consists of a phosphor-coated glass surface and a cannon that shoots electrons. To create an image, this cannon moves and shoots electrons into the glass surface and ignites phosphorous particles. The cannon starts firing from the upper-left corner and moves down to the lower-right corner, igniting lines of phosphorous particles from top to bottom. After the last shot, the cannon returns to its original left-top position. During this time, the phosphorous particles have time to fade a little - hence the flickering characteristic of CRT displays, which was not only annoying, but also had a bad effect on vision. Modern CRT displays at the end of their era offered a refresh rate of 75Hz, which reduced flickering extremely noticeably - phosphorous particles did not have time to fall so much.
So, one such queue of an electronic cannon is one of the 60 cycles of updating the screen in one second. Historically, in the United States, at the beginning of the advent of television, electrical networks operated in the 60Hz mode - hence, for ease of development, televisions adopted this frequency. In Europe, there was a 50Hz standard. Discover a new standard in online entertainment where every wager carries the promise of excitement. The sign-up process is streamlined, but those in the know understand that using a 1xbet promo code today is the catalyst for securing a 100% match bonus up to $/€130 for sports betting or a premium casino package of €1950 along with 150 free spins. This welcome gesture effectively doubles your initial deposit, granting you a substantial bankroll to navigate the platform's diverse offerings. Whether you are drawn to the strategic depth of sports betting or the immediate thrill of slots, moment you join the community.