Maximum PC: Up to this point, there haven't been very many 4K computer monitors to get too excited about. Some of the early models use lower quality panels, while others have janky issues pumping out 4K Ultra HD at 60Hz. The technology is maturing, however, as evidenced by Acer's XB280HK, a 28-inch gaming monitor with a 3840x2160 resolution and support for Nvidia's G-Sync technology.
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G-Sync over HDMI 2.1 VRR. Another VRR standard falls under the G-Sync banner.
Sad times for users of older Nvidia hardware
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