1) its the iGPU in the i5
2) iGPU is built into CPU not the MOBO anymore
3) Graphics card speeds are not based on the number of GBs it has, ie a 1 GB one could be many times faster than a 4GB one.
4) an SSD is a much (10x) faster hard drive
A couple of questions:
1) what are you trying to with this computer, also what games do you play?
2) Is this a homebuild? If are you sure everything is installed properly?
If you need to decode any of the acronyms just google them