There are many differences with the old and new generation computers and some of it's differences are that new generation computers are more advance active and more portable that the old computers.
The memory capacity of the new generation computers are greater that the old.
When you considered the advancement of the new generation computers that the old, the new generation is more efficient that the old computers.
Lastly is its portability, there were old computers that are so big you can't even change its position.