HDMI only @ 30HZ

abt

Nov 8, 2018
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I'll keep this as succinct as possible.

I have this monitor:
Dell U3818DW - https://www.dell.com/en-au/shop/dell-ultrasharp-38-curved-monitor-u3818dw/apd/210-amwn/monitors-monitor-accessories

This video card:
GeForce GT730 - https://www.geforce.com/hardware/desktop-gpus/geforce-gt-730/specifications

And this cable - https://www.amazon.com.au/dp/B079L6G99G/ref=pe_2361882_282382012_TE_item

But I can only get 3840 x 1600 @30Hz. 60Hz is an option in the Nvidia control panel but when I switch to it the screen flicker and goes crazy.

I've tried a shorter cable.
 

Glenwing

Admirable


3840×1600 @ 60 Hz would require a graphics card with HDMI 2.0 support. The GT 730 does not have that.
 

dvo

Distinguished
Jan 16, 2008
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that specs page is definitely incorrect. the first nVidia cards to come with an hdmi 2.0 port was the GTX 9xx series cards. HDMI 1.4 will do 3840x2160 @ 30 max
 
HDMI 1.3/1.4 can do 4K 60 Hz with chroma subsampling. I don't know if that's something you can control, but if you can find that setting somewhere maybe try playing around with it. Also, that is a 10 bit HDR monitor. Your graphics card may only be able to do 4k 60 Hz with 8 bits per color.