G means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. G Acer NITRO VG2 VG272UP, 27", 2560 x 1440 pixels, UltraWide Quad HD, LED, 1 ms, Black Acer NITRO VG2 VG272UP. Display diagonal: 27", Display resolution: 2560 x 1440 pixels, HD type: UltraWide Quad HD, Display technology: LED, Response time: 1 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in speaker(s). VESA mounting. Product color: Black https://www.gadgetreview.com/acer-nitro-vg272-xbmiipx-27-full-hd-1920-x-1080-ips-amd-radeon-freesync-and-g-sync-compatible-gaming-monitor-review The Acer Nitro VG272 Xbmiipx 27″ Full HD (1920 x 1080) IPS AMD Radeon FreeSync and G-SYNC Compatible Gaming Monitor will showcase the latest games and movies with stellar visuals that keep you hooked. It features a zero frame design that will maximize the... Up to 0.1 millisecond response time, Equipped with AMD Radeon freesync for smoother graphics IPS monitor may bring more motion blur, The Acer Nitro VG272 Xbmiipx 27″ Full HD (1920 x 1080) IPS AMD Radeon FreeSync and G-SYNC Compatible Gaming Monitor will make a great gift for yourself or a loved one since the low motion blur, response time, and refresh rate will make gaming more enterta...