I have an old Dell Inspiron 15Z. It has a 3rd gen intel core i7 processor. For various reasons ranging from cost, through waste disposal concerns and attachment, I do not want to get a new laptop computer. Is it possible to upgrade this CPU to the latest 8th gen CPUs?
Ivy Bridge micro-architecture (3rd generation mobile) works on socket Socket G2 BGA-1023 while the Kaby Lake micro-architecture (7th/8th generation mobile) works on BGA 1440 so they are physically incompatible.
In fact, Intel managed to have 10 different sockets for 7 generations of CPUs (G1, 1288, G2, 1023, 1224, G3, 1364, 1168, 1536, 1440).