What is the vertical sync

The fact that a vertical sync and how it affects the performance of the graphics subsystem, told more than once.I can even say that the theme of "bearded" because it originated in the time of occurrence of the first three-dimensional accelerator when hungry speed users began to fight for every extra frame per second.Since then, no one was ten years old, but the question is, how can it be turned off vertical sync in games, still excites the minds of many fans of the computer three-dimensional applications.This happens because during the years of the evolution of the video subsystem of any global changes, in principle, imaging did not happen: the same frames, triangles, even the bit depth of the external color space is the same.

What is the vertical sync?To understand this question, it makes sense to remember the basics of graphic component.As you know, to get the whole picture on the screen, the video card to the monitor provides a number of static images - frames.To create the illusion of motion of an

y elements of some of these changes.Due to their rapid change seems to be that the whole image and if changes on the screen have moved.It is much easier to understand this if we consider the analogy with the child's play when worksheets are similar figures, and the subsequent rapid flipping it seems that the picture is "alive."Although the appearance of liquid crystal display (LCD) monitors has made adjustments to the construction of the image, the principle remains unchanged.The speed with which the monitor can display the above-mentioned static images, called the vertical frequency.However, to understand what is the vertical sync, it can not be without another moment of clarity.

schemes monitor just displayed on the screen is what gives them the card.Her performance depends on how many elementary static pictures can be changed per unit time (usually imply second).

Video processors past generations did not differ unprecedented speed, but monitors, on the contrary, tried to do so in order to scan them is not less than 85 Hz (frames per second).As a result, the number of pictures transmitted by the video card to the monitor, it was less than could have put the last one.But now the situation has changed.Frequency in LCD monitors is rarely more than 60 Hertz (exception - the devices that support hardware 3D-image) and video when working with multiple applications now form more frames.Vertical Sync - is the ability to coordinate between the driver are two frame rate by reducing the number of pictures, the card issued to the monitor.This allows for smooth when displaying dynamic scenes.On the other hand, the vertical synchronization ati (NVidia, Intel) - it is a kind of tie-up, do not allow the card to work at maximum efficiency.

manage synchronization in the settings of the video driver.It is allowed to activate, inhibit or automatic mode, selected in accordance with the needs of the application.