It is not good practice to install an additional graphics card on GPU integrated chipsets, as it frequently does not work, or causes unexpected results. Albeit, the former graphics card can be disabled and the new one enabled, but that doesn't solve compatibility issues between the graphics card and the motherboard/chipsets.
However, if anyone else has any recommendation on it, they can feel free to chime in. I have only seen people recommend an NVIDIA GT 730, which has two available monitor connections. But, do so at your own risk.
Edited by Kakuzu, 29 November 2016 - 02:26 PM.