I have a laptop which runs an i5 520U CPU which supports a BGA1288 socket, and I would like to swap the CPU to a more powerfull one. most other CPUs that i have looked at support BGA1288 and a PGA988 sockets, I was therefore wondering whether I need to buy a CPU that is specifically designed for a socket, i.e. there are two versions of the same CPU one for each socket, or one CPU that is compatible with both of the sockets.
