I have an Asus Z87 Deluxe motherboard, which has an integrated Intel HD 4600 GPU; I also have a nVidia GeForce GTX 560 TI graphics card; currently, my monitor is connected to the graphics card and the onboard GPU is unused.
If I connect the monitor to one of the motherboard video ports (it has both HDMI or DisplayPort), the video output will be handled by the onboard GPU; in this situation, can I still use the nVidia card to render graphics, f.e. in games? Or can it be used only when physically connected to a monitor?
The operating system is Windows 7 x64.