Hawk269
Member
I did some further testing. When you go to the Nvidia Control Panel it lists the 4k resolution twice. Once under UHD and this one is 3840x2160 at 30hz. When I select this and go to that UFO test, it gives errors that it is stuttering and you see the UFO scrolling across the screen really choppy.
When I select the same resolution under PC, which is 3840x2160 at 60hz and run the UFO test the top ship is very smooth and the message in the window below states "valid".
Edit: I posted this question at the Nvidia Forums in the Beta driver thread and Manual G from Nividia responded with this....
"We will have more information on this at a later date but it is technically possible to get 50Hz/60Hz at 4K resolution over HDMI 1.3 bandwidth."
Quoting to add more information...
It seems like whatever it is that Nvidia is doing, is in fact allowing 4k at 60fps via current HDMI out of the GPU's. However, in SLI it does not work. Someone at the AVSForums that tipped me off to this tested in SLI and it just crashes, but with single card it works flawlessly. Only thing is that no single card can handle modern games at high setting or higher at 4k/60fps. So I hope whatever it is that Nvidia is doing that they are able to get this working in SLI.