The idea is as if you took a photograph of something, then rotated your vew maybe just 1 degree to the left and took a photograph of that, then cut the two pictures in half and taped the top half of one to the bottom half of the other. Tearing is a phenomenon that gives a disjointed image. It moves around as the complexity of the image the video card has to draw changes based on what you are seeing. However, during a fast paced game, your FPS rarely stays the same all the time.
What is FPS? It's how many frames the video card can draw per second.
This is why LCD's still have a "refresh rate" even though they don't actually have to refresh. However, because of how VGA (and DVI) works, the LCD must still poll the video card at a certain rate for new frames. Pixels on an LCD stay lit until they are told to change they don't have to be refreshed. If your monitor is set at a specific refresh rate, it always updates the screen at that rate, even if nothing on it is changing. Note that this isn't your FPS as your games report it. They range from 60Hz at the low end up to 100Hz and higher. Different monitors support different refresh rates at different resolutions. It is the number of times the monitor updates the display per second. It's specified in Hz (Hertz, cycles per second).
I will describe all these things here.Įvery CRT monitor has a refresh rate. The purpose is to eliminate something called "tearing". The basic idea is that synchronizes your FPS with your monitor's refresh rate. What is VSync? VSync stands for Vertical Synchronization.
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