Just do it if you are thinking of upgrading anyway. I find 75Hz to look much better than 60Hz but obviously something like 144Hz is very smooth. I found using Nvidia's custom resolution tool to work fine when I did it since it automatically adjusts the other timing parameters. I doubt you will get 75Hz out of a 60Hz monitor but might be worth a shot. My monitor supports 75Hz but its at least 6yrs old and still running strong if that's any indication of lifespan. (My monitor is a VX2025wm FYI).