Good Notebook CPU

So I'm planning to upgrade my old "notebook" ( its a Acer Aspire 3750Z with a Pentium B940 )

So I did some research, but found nothing really nice for replacement. The current B940 has a

TDP of 35 Watt and fits in a G2 Socket. > Link to CPU <

Is there a good upgrade, that you could recommend, or a website I can check for good upgrades?