Can Dell N4030 upgrade CPU?

I3, I5 generations. I7 can be replaced, and it is easier to replace. Just pay attention to heat dissipation. In normal use, the bottleneck is not the CPU, and the graphics card cannot be replaced, so the best effect is to replace the solid-state hard disk, which obviously improves the speed, but now the solid-state hard disk has a relatively small capacity and a large capacity is very expensive. It is recommended to use 40G to make a dual disk (solid state hard disk is the main hard disk, and the original hard disk is installed in the CD-ROM drive as the auxiliary hard disk).