2160p 120Hz over HDMI 2.0...possible?

Talk about overclocking displays at a higher refresh rate. This includes homebrew, 165Hz, QNIX, Catleap, Overlord Tempest, SEIKI displays, certain HDTVs, and other overclockable displays.
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tocirahl
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2160p 120Hz over HDMI 2.0...possible?

Post by tocirahl » 29 Nov 2017, 11:25

Does anyone know if it's possible to get my GTX 1080 to output 4k 120 Hz over HDMI 2.0?

At very least with standard timings, 2160p 4:2:0 120 Hz should fit within the HDMI 2.0 bandwidth limitations, and with reduced blanking, 2160p 4:2:2 120 Hz should also fit. 2160p 4:4:4 120 Hz obviously does not fit.

I've tried using CRU, but it doesn't seem to be possible to specify a 2160p 120 Hz resolution at any chroma other than 4:4:4 (RGB).

Does anyone know if there's any way to get 2160p 120 Hz at different chromas?

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RealNC
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Re: 2160p 120Hz over HDMI 2.0...possible?

Post by RealNC » 29 Nov 2017, 13:51

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tocirahl
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Re: 2160p 120Hz over HDMI 2.0...possible?

Post by tocirahl » 29 Nov 2017, 13:57

RealNC wrote:Maybe use the pixel clock patcher?

https://www.monitortests.com/forum/Thre ... ck-Patcher
Thanks for the suggestion, but I'm not really sure why that would help?

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Re: 2160p 120Hz over HDMI 2.0...possible?

Post by Chief Blur Buster » 02 Dec 2017, 20:28

The chips on both ends of the connection needs to support the mode. That includes the GPU and the graphics card.

What display are you trying to test? The only 4K120 capable display that can be purchased today is the Zisworks 4K120 one. And that display does not have HDMI, only DisplayPort.
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