Greg is looking to buy a new laptop and wants to know if he can still increase the RAM after he buys it. Can he plug in the RAM he has in his old one to boost the RAM of the new one? Leo says probably not. The form factor needs to be the same, and in most laptops the RAM is soldered in. He may be able to if it's SO DIM compatible, but then there's the speed issue.
Greg should go to Crucial or Kingston and use their RAM Picker to see what he'll need. If it comes up with something similar, then maybe it'll work, but it's not likely.
Image By No machine-readable author provided. Cyberdex assumed (based on copyright claims). [Public domain], via Wikimedia Commons