can i use motherboard onboad graphics with i3 cpu instead of fitting a pci graphics card. This is for office use not gaming. Thanks
But... neither the i3-9100F or the i5-9400F provide graphics.
If you want onboard graphics, you must use the B360M H board with a processor that provides graphics.
Sounds like you need to think this hardware selection through a bit more.
Doc (not an Intel employee or contractor)