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No 4k@120hz with LG B9
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05-12-2023, 08:36 AM
(Last edited: 05-12-2023, 08:37 AM by Dancapt)
Post: #1
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No 4k@120hz with LG B9
I am trying to achieve 4k@120hz in windows 11 and had some trials with CRU but no success until now.
My setup is the following: Intel Nuc12wshi5 with iris xe graphics. It has 2 Thunderbolt 4 ports that support dp alt mode 1 usbc to hdmi 2.1 cable 1 usbc to hdmi 2.1 adapter with a hdmi 2.1 cable Windows 11 LG 65b9pla oled tv The maximum I can squeeze with both cables is 4k@60hz although I know for sure the TV is hdmi 2.1 compliant. In CRU if I try directly to modify the refresh I am getting a red value and cannot continue. I tried adding DisplayID 1.3 and 2.0 each with a 3840 x 2160 and 120hz but nothing happened. |
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05-12-2023, 11:56 PM
Post: #2
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RE: No 4k@120hz with LG B9
You need to use the HDMI ports, not the USB-C ports. You shouldn't need to add any custom resolutions.
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05-13-2023, 05:51 AM
(Last edited: 05-14-2023, 12:04 PM by Dancapt)
Post: #3
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RE: No 4k@120hz with LG B9
The NUC hdmi ports are not full hdmi 2.1, just tmds.
The max res with the hdmi 8k cable is still 4k@60hz |
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05-17-2023, 02:35 AM
Post: #4
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RE: No 4k@120hz with LG B9
Then it might not be possible. DisplayPort has less bandwidth than HDMI 2.1, so 4K @ 120 Hz using an adapter will only work if the GPU and adapter both support display stream compression (DSC).
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