Hertz Or Cycles Per Second. How many times per second can you redraw images on the screen? Too low a refresh rate can cause the screen to vibrate. Even if you do not see the screen vibrate, it can be annoying to the eyes. Some say it should not be less than 72 Hz, but some experts say it should be at least 80 Hz. If the refresh rate is too high, it will not be good.
To adjust the screen refresh rate on Windows XP, open Display Properties and go to Settings. Advanced. Adapter. Click List All Modes. From the list of supported values, you can choose one of the refresh rates, screen resolution, and color depth options. In other Windows versions, open Display Properties and go to Settings. Advanced. Click on the Adapter. You can choose one of the ‘Refresh Rate’ drop-down menus. If you do not see these options, your graphics card and monitor may not support multiple refresh rates.