On Apr 9, 2025, at 2:33 PM, Bob Gerard via groups.io <rowerbob@...> wrote:
there are different versions of HDMI cables.
There are versions 1.4, 2.0, and 2.4.
1.4 is capable of a Maximum Resolution of 4K at 30 Hz.
2.0 is capable of a Maximum Resolution of 4K at 30 Hz.
2.4 is capable of a Maximum Resolution: Up to 10K at 120 Hz
I don¡¯t know where you got that information, but you should never go back there.
There is no such thing as HDMI 2.4. At least not yet.
What you are calling HDMI 2.4, is actually HDMI 2.1.
And HDMI 2.0 can support up to 4K video at 60 Hz
See:
The HDMI port in the new (base) M4 Mac mini supports HDMI 2.1, but that is irrelevant, since all of the reasonably priced 4K monitors on the market only support HDMI 2.0 (4K video at 60 Hz). Which is more than plenty. So all that you need is an HDMI 2.0 cable. But since an HDMI 2.1 cable is backwards compatible, that will work too.
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Randy B. Singer
Co-author of The Macintosh Bible (4th, 5th, and 6th editions)
Essential But Hard To Find Macintosh Software and Advice
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