HDMI 30

This specification increased the maximum bandwidth of HDMI cables from 10.2Gbps to 18Gbps . This further cemented 4K support with the ability to handle 4K video at 60 frames per second with all forms of high dynamic range (HDR), and laid the groundwork for 8K.

HDMI 1.4 can deliver 10.2 Gbps and its bandwidth is large enough to provide 24 & 30 frames per second think of it as the entry level with the ability to have a dabble with any content such as 4K.

Yes, HDMI 1.4 can support up to 144Hz at 1920×1080 .

No. The port complies with HDMI 1.4, and as such 3840×2160 (4K is only achievable at 30Hz. 2560×1440 and all lower resolutions will display at 60Hz .