Do I need 120Hz or higher for a 4K monitor?

For productivity and creative work, 60Hz is still fine and saves money — the LG 27UP650K-W and 27US500-W are examples. For gaming or a smoother desktop feel, RTINGS and Wired both flag 120Hz+ panels (Dell S2725QS, ASUS XG32UCG) as a noticeable upgrade, especially on consoles like PS5 that target 4K/120.