HP ProBook 650 G1 Processor Upgrade?

Hi there:

Please see the link below for the Service and Maintenance guide for that model series:
http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c04030196-2.pdf

It shows within, the supported components. Note however that for processor changes, the motherboard also has to match that component. Also from the list for this series Quad cores are available for this model, but only the AMD quad cores.

I post on behalf of HP.