4K60Hz over Displayport/HDMI passive cable (not natively possible!)

[Dave Nash]

I upgraded from GTX 1080 Gaming X to RTX 2080 OC and had a problem getting my 4K60Hz TV to run at native resolution in windows. (it did work in games)

 

I have a 4K/60Hz Samsung TV which only has HDMI

I was using a DVI to HDMI connector for my 1080, then upgraded to a RTX 2080, and assumed I should connect my main display to display port (passive adapter to HDMI cable) and my secondary 1080p projector to an HDMI port.

 

Windows was allowing me to set up a custom 4K/60Hz resolution which was downscaled to 1080p and passed to my TV, which was super low quality and very frustrating. I tried 59 hz, 4096 x 2160.. 30hz...everything.

 

I struggled for an hour (thankfully only 1hr because I have some experience) and finally figured out that display port is not compatible with HDMI!!!!!

 

SOLUTION:

 

CONNECT 4K/60Hz TV using HDMI cable. (instantly got the native resolution and frame rate.)

connect additional 1080P projector using passive displayport to hdmi adaptor cable.

 

There may be a problem later when upgrading to a 4K projector.. (get one with displayport... or try to fina an active adaptor) or make sure you have a GPU with more than one HDMI.