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Dell 6K U3224KB Monitor
- Thread starter enc0re
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Based on the user guide, this card can only support DP 1.2 with max resolution of 4k (hres of 4096, a tad better than 4k).
Thanks for your replies! I will have to purchase a new card 
Big expenses requiring other expenses...
Big expenses requiring other expenses...
But according to NVIDIA's specs page for the GTX 1060, the card does support DP 1.43 and resolutions up to 7680x4320 @ 60Hz. Looks like the user guide is out of date. It was probably never updated after the release of the card and seems to say that at release, DP 1.3/1.4 support was either present but not yet certified or would be add/certified sometime later.
I suggest you first try to drive the Dell with a DP 1.4 cable from your GTX 1060 to see if you can get 6K working with just a cable change as @turbineseaplane also suggested earlier. Maybe you don't need to buy a new card.Thanks for your replies! I will have to purchase a new card
Big expenses requiring other expenses...
But if you prefer to connect the Dell via HDMI, then you will need a new card with HDMI v2.1 because the HDMI 2.0b on your card does max out at 4K @ 60Hz.
6K60 with single cable DisplayPort connection requires DSC or chroma sub sampling.
For Nvidia, DSC is supported by Turing class GPUs or later (Ampere, etc)
https://nvidia.custhelp.com/app/ans...efresh-rate-displays-with-vesa-display-stream
https://en.wikipedia.org/wiki/Turing_(microarchitecture)
Earlier GPUs that specify 7680x3840 60Hz support probably refer to dual tiled displays like the Dell UP3218K which doesn't use DSC.
The predecessor of Turing is Pascal which includes the 1060 and doesn't support DSC.
https://en.wikipedia.org/wiki/Pascal_(microarchitecture)
Does the Dell support chroma sub sampling? Check the Nvidia control panel in Windows. The one EDID that I've seen mentions support for 4:2:2 but not 4:2:0. It has these timings:
6144x3456 60Hz is 1378.8 MHz (possible with 4:2:2 8bpc?)
6016x3384 60Hz is 1323.3 MHz (possible with 4:2:2 8bpc?)
5120x2880 60Hz is 952.5 MHz (possible with RGB/4:4:4 8bpc and 4:2:2 10bpc?)
6144x3456 30Hz is 662.75 MHz (possible with RGB/4:4:4 10bpc?)
The 6016x3384 60Hz timing that Apple uses is 1286MHz. Does the Dell support this as a custom timing? 4:2:2 10bpc can do this timing.
So how would you connect a 7000 AMD card to this monitor. That card is capable of 6k without DSC AFAIK.
Without DSC, DisplayPort 2.1 with UHBR10 can do 6K60 at 8bpc and UHBR13.5 can do 6K60 at 10bpc.
Without DSC, UHBR10 can maybe do up to 1290 MHz at 10bpc.
What UHBR modes does the Dell U3224KB support? I would like to see AllRez output for all the ports of the Dell U3224KB (using an Intel Mac). Or a full dpcd dump from all the DisplayPort ports in Linux.
Amazon’s your friend....
Silkland 16K Mini DisplayPort to DisplayPort 2.1 Cable, [16K@60Hz, 8K@120Hz, 4K@240Hz] 80Gbps Bi-Directional, HDR, G-Sync, Mini DP [Thunderbolt 2] for Gaming
Thanks! It's not customary here to buy from Amazon, because they don't have a site for our country. I do it, but rarely, from amazon.de. Anyway, I placed an order for that cable, although it's not certified. They have some other models that are certified, so I just did it.
If you had HDR enabled, 60Hz might show up if you disable HDR.
That said, macOS support for HDR on this Dell has been coming and going depending on which point release of Sonoma one is running. Everything worked on I think on 14.2 but then regressed in later releases. With macOS 14.6, released this week, I no longer have HDR as an option at all, at any resolution or refresh rate, with TB4 or HDMI. Sigh.
I'm sure you have, but try toggling HDR on/off/on in the Dell OSD that almost always gets it back for me. But I haven't bothered checking on 14.6.
Thanks, that got the HDR option back for me at 30Hz using HDMI (but still no HDR option at 60Hz over HDMI sadly). I am again seeing HDR over TB at both 30Hz and 60Hz.
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Hmm. So I'm on 14.6 and just double checked. I'm able to get HDR at 60Hz.
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I should clarified that I meant over HDMI. HDR @ 60Hz used to work on 14.2 I think, but it hasn't since 14.4 (?). Anyway, I've updated my post above to be clearer and that I am again getting HDR on TB at 60Hz after doing your toggle trick on the Dell's OSD.
Hello
I currently have 2 Apple Studio Displays, but the black bar in the middle between the two monitors still bothers me. I have now come across the Dell U3224 and have read a lot about it. What do you think if you previously had an iMac, MacBook with Retina and Apple Studio Display, the Dell Monitor U3224 would really be a good choice if you have become accustomed to the great picture/quality from Apple over the years. I would then connect my Macbook Pro Max (M3) to the monitor via Thunderbolt.
The Apple Monitor (Studio and iMac) have glossy is the Dell with no glossy bad?
Many thanks
I currently have 2 Apple Studio Displays, but the black bar in the middle between the two monitors still bothers me. I have now come across the Dell U3224 and have read a lot about it. What do you think if you previously had an iMac, MacBook with Retina and Apple Studio Display, the Dell Monitor U3224 would really be a good choice if you have become accustomed to the great picture/quality from Apple over the years. I would then connect my Macbook Pro Max (M3) to the monitor via Thunderbolt.
The Apple Monitor (Studio and iMac) have glossy is the Dell with no glossy bad?
Many thanks
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I have two ASDs and the Dell connected to my Studio. I like the Dell a lot but it's not as nice as the ASDs. Unless this middle bar thing is REALLY bugging you, I'd stay with what you're got. I don't think it's worth spending money to make a change. Maybe more a debate if you were purchasing for the first time but even then I'd say go with the ASDs.
If you have specific questions, let me know. I've had the monitor for close to a year now (I think). I've had ups and downs. Overall I'm happy with the purchase but more so with the ASDs.
And yes - the Dell is matte. Not a severe matte, but not glossy like the ASD. I'd say this is for sure a negative but not a deal breaker for me at least.