What should my screen refresh rate be?

Hi guys, ive never really understood the refresh rate for screens. I have a geforce 4 ti4200, and my refresh rate is 60hertz, what should it be, or whats the best? Thanks sasarchiver

100 and more is the best for your eyes. 85 is the lower limit for "blindness".....  ; 60Hz is the lowest possible of your monitor and can harm your sight  when long-acting.
you have max. vertical and horizontal freq. of your monitor and a screen resolution (for example horizontal 1024x768 vertical)
so you will know the max vertical freq. by counting: (max horizontal freq of your monitor)/(vertical screen resolution)*(0,95)=max refresh rate
eg: you have max 110kHz of horizontal freq. and screen resolution of 1024x768
so: (110000/768)*0,95=136Hz
this is the max refresh but the graphics cards sopports only 120Hz so you choose 120Hz in your graphics driver 120Hz for this resolution.

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