Eons ago when I upgraded my monitor from monochrome to colour, it was THE most exciting upgrade of that era. A flickering screen was probably not even acknowledged as a major drawback of monitors of that era, since a comparison was not possible with anything else. Now we have LCD monitors, which practically exhibit no flicker at all, hence, the comparison. Flicker is by far a major drawback in CRT monitors and many users not knowing that the default is usually set at 60 Hz, continue to suffer with eyestrain and subsequently headaches, thus reducing their quality time in front of their screens. Enter the LCD! Now, even at default 60 Hz, there is no noticeable flicker when LCD monitors are setup and the user can easily get more quality time doing things for a longer periods without the eyestrain leading to headaches.