what socket, exactly? I think i7s use g2 or g3 depending on model. First, Check about the socket, then. check about heat production, the third thing you're going to check is the space inside your laptop/notebook which I think it's pretty much standard and also if your motherboard supports it. After the research you'll need to buy the mobile CPU, someone may help you getting one through a reliable website as it's not very easy to find mobile components. Does anyone know about a good website for buying mobile CPUs and GPUs?
I don't know why Nvidia, Intel and AMD don't sell mobile components as they do with desktop components :c