我的顯示器是60hz，但可以設置刷新率為59hz或60hz，感覺這兩種刷新率數值上沒有太大區別，所以59hz刷新率存在的意義是什麼？
在vista/server2008及以上的系統中，刷新率只保留整數部分，不四捨五入，所以有59HZ 60HZ兩個選項。
本人親測，
59HZ實際上是59.94HZ
60HZ實際上是60.00HZ
當年NTSC制式的模擬彩色電視信號為了避免干擾，把原來的場頻60.00HZ下調為59.94HZ。
顯示器設計59.94HZ是為了與NTSC 模擬彩色電視信號同步，這個是模擬時代的歷史遺留問題
據說A卡有59.94/60.00，N卡只有59.94
轉自XX百科：
In December 1953 the FCC unanimously approved what is now called the NTSC color television standard (later defined as RS-170a). The compatible color standard retains full backward compatibility with existing black-and-white television sets. Color information was added to the black-and-white image by introducing a color subcarrier of precisely 315/88 MHz (usually described as 3.579545 MHz or 3.58 MHz). The precise frequency was chosen so that horizontal line-rate modulation components of the chrominance signal fall exactly in between the horizontal line-rate modulation components of the luminance signal, thereby enabling the chrominance signal to be filtered out of the luminance signal with minor degradation of the luminance signal. Due to limitations of frequency divider circuits at the time the color standard was promulgated, the color subcarrier frequency was constructed as composite frequency assembled from small integers, in this case 5×7×9/(8×11) MHz.[11] The horizontal line rate was reduced to approximately 15,734 lines per second (3.579545×2/455 MHz = 9/572 MHz) from 15,750 lines per second, and the frame rate was reduced to 30/1.001 ≈ 29.970 frames per second (the horizontal line rate divided by 525 lines/frame) from 30 frames per second. These changes amount to 0.1 percent and were readily tolerated by existing television receivers.
PS：A-V一般是29.97/30.00/59.94/60.00
天朝大陸電視劇用的PAL制式，一般是25/50FPS
正常的顯現器由於背光源是CCFL；規範改寫頻率是60HZ，只需相位不顫動就沒問題了； 顯現器的正確使用是封閉顯現器後在拔出電源；（插電的時分要保證先插信號線）；突然斷電對任何家電都有損害，如果要想顯現器用的更持久 就要正確使用。
有的國家市電頻率是60Hz吧，若顯示器頻率也是60Hz，在燈光下就會出現一種神奇的效果，59Hz就能沒問題了。純屬個人見解，僅供參考。
推薦閱讀：