Notebooks Upgrading My Laptop CPU

I recently got an Acer Aspire 5315 second hand off a friend for £30.

I want to upgrade the processor as it is only 1.86 GHz. I have already taken the laptop apart to check the processor is not soldered in and it isn't

What i want to know is can I put in any processor with the same socket type??

It is a socket mPGA478MN (478 for short)

Thanks for the help

 

http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors#Notebook_.28mobile.29_processors

There is a list of mobile processors, just check the socket is Socket M

The best CPU you can get I believe http://ark.intel.com/products/27257