If you’ve got a PC to power it, a 4K monitor is the best you can get for sharp, clear gaming. Better yet, many 4K monitors are now shipping with high refresh rates and HDR support–like the Acer Predator XB273K, one of our picks for the best 4K gaming monitor, which is on sale today at Amazon. You can pick up the Acer Predator XB273K for $200 off right now, a tempting deal for those shopping around for a new monitor.