External Monitor Max Resolution and Refresh Rate for AMD 7040 series with 780M iGPU?

Does anyone know what the maximum resolution and refresh rate specifications are for external displays used with the AMD 7040 series 13-in laptops?

AMD publishes specs for the chipsets, but I’m not sure if performance differs when running both a laptop display and external display.

While we’re waiting for a higher refresh rate in the 13-in display, I’m wondering what type of reasonable expectations we should have for connecting to external displays and using apps like the Adobe Creative Suite.

Thanks in advance for any help answering this question.

I had no problem running a 4k 144Hz monitor while the laptop display is turned on.

Thanks @Hinrik! I appreciate the info.