I am trying to have a better understanding of this case, so if could answer the following, it will help a lot;
Could you please let me know what is the operating system you have install in the NUC?
Are you trying to achieve 5K on the NUC?
What do you mean by "But windows needs to send two signals via thunderbolt 3."?
See responses below:
Operating system: Windows 10 Professional
Trying to achieve 5K on the Skull Canyon NUC:
Yes. Specifically through the thunderbolt 3 port. The LG Ultrafine 5K monitor only accepts Thunderbolt 3 as it's display input. Other 5K monitors, such as ones from HP and Dell, accepts two display port inputs. The LG Ultrafine 5K monitor is using the same method to bypass the current limitation of a single display port, by combining two video signals into one to acheive 5k resolution.
In short, can the Skull Canyon NUC support 5K resolution via the thunderbolt 3 input? Or via a future firmware/driver update from Intel or the Thunderbolt group?
Found this on the thunderbolt website:
What are the video formats supported by Thunderbolt 3?Thunderbolt 3 is based on the DisplayPort 1.2 specification and can support up to 2 streams (eight lanes) of DisplayPort 1.2 video bandwidth. A single cable now provides four times the data and twice the video bandwidth of any other cable, while also supplying up to 100W of power. One 4K display (4096 x 2160) 30-bit @ 120 Hz One 5K display (5120 x 2880) 30-bit @ 60 Hz Two 4K displays each (4096 x 2160) 30-bit @ 60 Hz
But it's not outputting that signal on the Skull Canyon NUC
Thank you for your answers.
First of all, I just wanted to let you know that Apple has requested that all questions regarding Apple systems and software be addressed directly with Apple support.
It is theoretically possible to combine two DP 1.2 ports to achieve higher bandwidths, yet the OS won’t likely see any difference in terms of configuration. Most of it should be done via OSD (On-Screen Display) i.e. monitor’s menu. I believe the monitor lacks OSD options and the controls are bound to the macOS, yet it is better if Apple provides the official answer.
This is not an Apple product, yes, the LG Ultrafine 5K monitor is compatible with Apple laptop configurations. However, the fundamental question is rather the NUC Skull Canyon is able to output a 5K signal via its thunderbolt 3 port. As a user, the answer seems to be no at this point, as the thunderbolt port is outputting a legacy display port signal, which stops at 4K resolution.
The ask is for either Intel or the Thunderbolt group to produce display driver that can output a 5K signal. Capability stated by thunderbolt above is different than compatibility on the NUC Skull Canyon. Once again, the answer is no at his point.
That is correct, as you mentioned the Intel® NUC Kit NUC6i7KYK support up to 4K resolution.
The TV advertisement is focused to Apple products, in fact the requirements for this display are; macOS Sierra 10.12.1 or later, and a Thunderbolt 3–enabled Mac connection.