Why does my monitor refresh rate return to 60hz?
If you’ve ever used a CRT monitor, you know that fine-tuning your refresh rate is essential. The refresh rate of a display is measured in Hertz (abbreviated Hz) and specifies the number of times per second that a display is illuminated. Setting the refresh rate to 60 Hz – a common default value – tells the monitor to redraw itself 60 times per second. For most people, that setting on a CRT monitor is too slow, resulting in an annoying flicker that can cause headaches, eyestrain, and fatigue. Bumping the refresh rate to a higher number can reduce that flicker, as long as the monitor itself can handle the faster rate. So, what if you have an LCD monitor? You can safely ignore the refresh rate setting. Changing this number in Control Panel has no effect on an LCD. Why? This snippet from the NEC Monitor Technology Guide explains it well: Flicker is a result of phosphor decay; that is, after the energy from the electron gun is transferred to the phosphor material, the energy and the resulti