How it works and what you need : NVIDIA G-Sync 101: Everything you need to know up until now - HardwareZone.com.sg
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MSI Optix G273 27" Full HD 1920 x 1080 165 Hz HDMI, DisplayPort, Audio G-Sync Co 679541210164 | eBay
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AMD Talks FreeSync in 2016, DisplayPort 1.3, HDMI 2.0a