Upgrading an old Pentium D to a Core i5... We got an i5 with integrated GPU, as that is more than sufficient for the usage.

But... is there any point in installing the old videocard? It is a nVidia 8400GS.
The integrated GPU (intel HD630) is faster at anything, but maybe there is some point?

On my system, I noticed that I can assign the GPU for applications or encoding (I have the onboard intel HD4600 and a GTX1070) and there are some benefits to that...

Another reason may be to have more video ports (the HD630 supports multiple monitors, but the mainboard has limited outputs)... does this make sense?