I have a Dell Inspiron 5459 (all-in-one) that came with additional graphics card/capability. The mother board carried standard Intel graphics chip, whilst the additional card is an NVidia.
Usually with a separate CPU box/desktop, the addition of a separate graphics card will over-ride the one on the motherboard, but under System Devices I can see both of the above and both are marked as 'working properly'.
There are also icons for both, and both appear to be able to change resolutions and other settings etc.
How do I know which graphics system is actually working?