I just tested the world’s fastest OLED gaming monitor — and its refresh rates are insane

Tom's Guide Verdict The LG UltraGear 27GX790B-B is a Dual Mode gaming monitor that can instantly switch between 540Hz at 1440p and 720Hz at 720p. While these high refresh rates are aimed at competitive professionals, average gamers would likely prefer a lower refresh rate with higher resolution. Still, there’s no denying that this is one of the fastest gaming monitors for serious enthusiasts. Pros +Elegant design +Vibrant display +Smooth performance +Intuitive UI Cons -Refresh rates are ridiculously high -No 4K option Best picks for you Best gaming monitors in 2026, tested and reviewed I've tested 100 monitors and these are the best ones for work, gaming and everyday use The 6 best curved monitors of 2026, tested and rated Why you can trust Tom's Guide Our writers and editors spend hours…

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