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Shouldn't I get 120hz and HDR in my Samsung Q90A (secondary display)?

davidrf
By davidrf
in Displays
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Posted

Hi there, 

 I connected a 50" Samsung Q90A as secondary display on my PC with a HDMI cable certified 8k 120hz HDR. I get 60hz of refresh instead of the native 120hz and NO HDR at all with a KableID cable. Is there something else other than the cable that could be the problem? Or the cable does not just do what it says? Thanks!

CPU: AMD Ryzen 9 5900X | Motherboard: Asus Prime X570-P | RAM: G.Skill Aegis 2x16GB PC 3200 F4-3200C16D-32GIS  | GPU: MSI Geforce RTX 4070 | PSU: Corsair TX750M | Cooling: Thermalright PA 120 SE

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Hey, are you still using your 1080? If so, it might only support HDMI 2.0, limiting it to 4k 60hz. A solution to this could be a displayport 1.4 to HDMI 2.1 adapter.

CPU: Ryzen 9 5950X / Cooler: Noctua NH-D15 black / RAM: G.Skill Trident Z Neo 32 GB / GPU: MSI GAMING Z TRIO GeForce RTX 3080 / Motherboard: MSI MPG X570 GAMING P C W

Storage: Corsair MP600 1 TB | Samsung 870 Evo 2 TB | Seagate Barracuda 2 TB | (2 x) Western Digital Red 4 TB / Case: Fractal Design Define 7 Compact / PSU: Corsair RM750 (2019) (didnt expolde yet) / OS: Windows 11 Pro | Debian / Peripherals: Logitech G305 | HP HyperX Cloud Alpha Headset / Displays: Dell U2311H | AOC I2481FXH

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I'm still using the 1080. Damn, I was sure it was 2.1.

CPU: AMD Ryzen 9 5900X | Motherboard: Asus Prime X570-P | RAM: G.Skill Aegis 2x16GB PC 3200 F4-3200C16D-32GIS  | GPU: MSI Geforce RTX 4070 | PSU: Corsair TX750M | Cooling: Thermalright PA 120 SE

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33 minutes ago, davidrf said:

I'm still using the 1080. Damn, I was sure it was 2.1.

That was added with Ampere, so 3000 series. 

 

Theoretically you could use an ACTIVE adapter like this, however this would require the 1080 to support Display Stream Compression 1.2 which I cannot guarantee it does. Its an optional component of the DisplayPort 1.4 spec but not always included in every product. 

 

https://www.uptab.com/displayport-1-4-to-hdmi-2-1-8k-60hz-or-4k-120hz-hdr-active-adapter/

 

Your card may have a firmware update to support the latest DP specs. https://nvidia.custhelp.com/app/answers/detail/a_id/4674/~/graphics-firmware-update-for-displayport-1.3-and-1.4-displays 

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Thanks a lot but I'll wait. I'm buying a 3080 in the next weeks, so the issue will be solved with that!

CPU: AMD Ryzen 9 5900X | Motherboard: Asus Prime X570-P | RAM: G.Skill Aegis 2x16GB PC 3200 F4-3200C16D-32GIS  | GPU: MSI Geforce RTX 4070 | PSU: Corsair TX750M | Cooling: Thermalright PA 120 SE

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