I recently bought the [Crossover 298K] that Wendell reviewed and so far I'm satisfied with it, except for one thing. When I enable the native 4K resolution (3840 x 2160) I only have the option of using 30Hz which is not happening. The highest resolution I can get with 60Hz is 1080p which kind of beats the purpose of me getting this monitor. I'm using the DisplayPort that came with the monitor. Please note that I am not intending to play games, just looking for a basic 4K work desk experience. My graphics card is the reference Nvidia Geforce GTX 760. And yes, I'm aware that for 4K a juicier card would be helpful but I don't have the funds at the moment.
Things I've tried: •Changing the resolution via Nvidia Control Panel and in Windows itself •Fiddling around in the monitor's menu settings to see if I can find anything.
With a minuscule bit of research I've noticed that other people seem to have the same problem and some solutions are 'enabling DisplayPort 1.2' on the monitor itself as sometimes by default it's set to DisplayPort 1.1, not sure if this is my case. The reason why I don't use HDMI is because the 760 does not have HDMI 2.0, so DisplayPort is the only way I'll get 4K @ 60Hz.
I haven't had enough time to look into this too much because I'm currently extremely busy with school so I was wondering if you fine blokes could help me out. Thanks!
yeah the screen and the gpu/output needs to be DP 1.2 also DP 1.2 has lot more data going on so sometimes you need a a better cable - the 4k screen I got came with DP cable but all teh rviews said it was cheap cable that didn't got past 1080p or 1440p etc - I my self having read the reviews already order a proper cable - the key is making sure DP 1.2 is working and on or find out why not - are you suing any cable adapters? IE mini-DP to DP?
I bought the 3M version of this cable and it allows me to do 1440p165hz and 4k60hz, where cheaper cables would not display a picture at all or only a limited refresh rate. It is also cheaper at this time for amazon.
That's just sad. Next time before clicking to buy make sure both your GPU and monitor support the specs. I know barncules had to learn the hard way too. I would just re-sell them all myself and get 4K @ 60hz. It's so cheap now it's almost embarrassing if you can't do it.
Sorry @CourageousFish, just noticed your thread. Both a reference 760 and the Crossover 289K should support 4K60 over DP 1.2 just fine, unless you've bought some special version of the 289K that I'm not aware of. Have you ensured that you've got the DP cable plugged into the correct DP port on the monitor? All of the photos of the I/O ports on the 289K that I can find only show one DP port labeled "DP 1.2", so if that is the case with you, being plugged into the wrong port should't be a problem.
Is there any way for you to try another (4K60-capable) device using the same cable to the monitor, or to try booting another OS (such as a live Linux distro on a USB thumbdrive)? That can help to isolate hardware and software issues, respectively.
If none of these works, I would begin to suspect the DP cable. Believe it or not, receiving a bum cable with one of these Korean monitors is not uncommon. Planning for that contingency just kind of comes with the territory. If you're at that stage in your testing, I'd get onto an active thread about the monitor, read it thoroughly, and see if anyone solved a similar issue with a particular cable. Then buy one of those, asking about it on the thread if necessary. You could also contact the manufacturer, who might at least point you at the right replacement cable. If all else fails, get on Amazon and look for a cable that guarantees 4K60 over DP 1.2.
Let us know how things look then. If you still have problems after that, we might be able to give you a few more things to try, but you may have more serious hardware issues with the monitor or card.