M4800 CPU upgrade from i5 dual core to i7 quad core?

Hello guys,

I have a dual core i5 CPU M4800. 

I want to upgrade it to an i7-4900MQ quad core CPU. Is this a possible upgrade? 

Will i7 CPU work fine with my current motherboard? 

M4800's CPUs are not soldered. I found out I can also buy an i7 CPU for this model. 

I'd like to know what happens when I put an i7 quad core CPU on my M4800...

Thanks in advance,