I have a 4k 34in monitor and its great. I also have a 4k 17in laptop screen. The text on that laptop screen is super tiny at 100% zoom, but its still sharp and crisp. It takes some training for your eyes to read that from 12 inches away. I also have super thick glasses for my spectacularly bad myopia, but I can read those screens where people with 20/20 vision cannot.