I have connected the 530 graphics to a 4k TV that requires 3840x2160 and it did not work well. 1920x1080 was the maximum possible resolution.
Even Knoppix or the 10 year old Microsoft standard driver is doing the job (but without sound). You can try the Microsoft driver if you are using external speakers anyway.
I think we will buy a graphic card.
If you want, you can read this:
This message was posted on behalf of Intel Corporation
The Intel® HD Graphics 530 supports the following screen resolutions
4K Support Yes, at 60Hz Max Resolution (Intel® WiDi)‡ 1080p Max Resolution (HDMI 1.4)‡ 4096x2304@24Hz Max Resolution (DP)‡ 4096x2304@60Hz Max Resolution (eDP - Integrated Flat Panel)‡ 4096x2304@60Hz
Please test with the latest video drivers: https://downloadcenter.intel.com/product/88345/Intel-HD-Graphics-530-for-6th-Generation-Intel-Core-Processors