siriusb
Cyborg Agent
Your that question has been answered by theraven.
And the reason why we have faster cards:
Since this is fun, let me try to tell you in a completely different way:
Say your monitor is set at 60Hz refresh rate and that you are running a game. The game engine calculates the frames using the gpu and the end result (to be displayed) is stored on the "frame buffer". This is an important thing to understand. The game may run at even 1000fps, but only the most recent frame is placed in the frame buffer. The video card contains another component called a RAMDAC. This component periodically accesses the frame buffer, converts the digital bitmap representation to analog signal, and sends it to the analog monitor. This periodic checking of the ramdac is in-sync with the refresh rate of the monitor, which here is 60 Hz.
If that was new to you, here's a fun fact too: Some games support the "V-Sync" option wherein, they synch the game engine to produce the frames in-synch with the refresh rate. This is done to prevent 'screen-tearing', an effect that occurs when the game engine updates the frame buffer before the ramdac has finished reading the frame buffer's previous content. The result is that the top portion is from the previous frame and the bottom portion is from the next screen.
And the reason why we have faster cards:
Since this is fun, let me try to tell you in a completely different way:
Say your monitor is set at 60Hz refresh rate and that you are running a game. The game engine calculates the frames using the gpu and the end result (to be displayed) is stored on the "frame buffer". This is an important thing to understand. The game may run at even 1000fps, but only the most recent frame is placed in the frame buffer. The video card contains another component called a RAMDAC. This component periodically accesses the frame buffer, converts the digital bitmap representation to analog signal, and sends it to the analog monitor. This periodic checking of the ramdac is in-sync with the refresh rate of the monitor, which here is 60 Hz.
If that was new to you, here's a fun fact too: Some games support the "V-Sync" option wherein, they synch the game engine to produce the frames in-synch with the refresh rate. This is done to prevent 'screen-tearing', an effect that occurs when the game engine updates the frame buffer before the ramdac has finished reading the frame buffer's previous content. The result is that the top portion is from the previous frame and the bottom portion is from the next screen.