I suspect you can't use the mobo onboard graphics at the same time as those on the graphics card; many motherboards automatically disable onboard gfx when they detect a gfx card.
Not sure about your second suggestion
Hands-on: Acer Predator Triton 700 review
D&AD Awards 2017: see the best design, advertising, illustration, animation and VR of the past year
How to lose weight with an Apple Watch
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.