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Display port by far
Sorry, there was a problem. Please try again later.Hi there, Joe. We understand your inquiry about the LG 27GX790A-B monitor's ports. For the best performance, including the maximum refresh rate of 480Hz at QHD resolution (2560 x 1440), you should use the DisplayPort. The HDMI 2.1 ports on this monitor also support high refresh rates, but the DisplayPort connection is typically recommended for achieving the highest performance specifications for gaming. If you have any further questions or concerns, please send us a private message on Social Media @LGUSSupport. https://www.bestbuy.com/site/lg-ultragear-27-oled-qhd-480hz-0-03ms-nvidia-g-sync-compatible-amd-freesync-premium-pro-gaming-monitor-black/6607888.p?skuId=6607888 We appreciate your patience. —Renzo
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