The hdmi supports 165hz refresh rate. However, it is necessary that the interface of the device is hdmi2.1, and the hdmi connecting cable is also hdmi2.1 cable, so that the device can transmit 1080P 165hz picture. If the interface or cable does not meet the standard, then the actual picture will not reach the 165hz.

HDMI2.1 supports the following resolutions and refresh rates: 4K 50/60, 4K 100/120, 5K 50/60, 5K 100/120, 8K 50/60, 8K 100/120, 10K 50/60, 10K 100/120.

HDMI is a fully digital video and sound transmission interface, can send uncompressed audio and video signals. HDMI can be used in set-top boxes, DVD players, personal computers, televisions, game consoles, synthesized amplifiers, digital stereos and televisions, etc. HDMI can send audio and video signals at the same time, due to the use of the same audio and video signals using the same wire, greatly simplifying the system line HDMI can send both audio and video signals at the same time.