If you are a PS5 or Xbox Series X gamer, HDMI 2.1 is what you need. Both of them support 4K, 120Hz, and HDMI 2.1. When you game on these consoles, you will surely see the difference: higher image quality and more detail. Besides, gamers also experience faster refresh rates as well as VRR (variable refresh rate). Both make it possible to reduce or eliminate lag and frame tearing for more fluid and detailed gameplay. VRR allows the source device to deliver video frames as fast as it can, achieving the full effect of high refresh rates. So far, Xbox Series X and S are verified as compatible with VRR, while PS5 has yet to add support for adaptive sync.