I am looking to Upgrade my E6410 it currently has the i5 520 M 4gb ddr3 memory and standard hdd. Thinking what the highest rated CPU is ( if i can switch it if its not soldered) and max Memory which i believe is 8gb tho i have seen some claims of 16gb. its running windows 7 and has the Nvidia NVS3100m Graphics card also

Any help would we greatful

Mickey