When it comes to laptops you need to worry about more than just socket type. BIOS support on laptops motherboards tend to be limited to whatever CPUs the manufacturer puts on that particular board, and you also have to worry about thermals, faster CPUs can generate more heat that the laptop's cooling might not be able to handle. The CPU you want to upgrade to has twice the TDP of the C70 and overheating is another potential issue you may run into if your laptop's cooling isn't up to snuff.