Yes, integrated graphics can work alongside GPU output simultaneously.
Yes, integrated graphics can work alongside GPU output simultaneously.
I own two monitors using HDMI cables. One links to the GPU, the other to the motherboard. Only one HDMI port is available on the GPU and one on the motherboard. My CPU is an i5-8400 with integrated graphics UHD 630. The GPU is a NVidia GTX1060 with 3GB of memory. The system runs on a HP Pavilion.