What is the best processor for an hp elitebook 8460p?

I've been looking for a good processor for my laptop that should have 3.6 GHz and graphcis 4500. But I'm also not sure which is the right one.

Minjung just get an SSD if the processor is too slow or preferably a PC

The CPU is soldered and can't be replaced

Fastest… That should be the i7-2620m.

Otherwise NO, there's no such thing as you think. 3.6 GHz.

The fastest CPU for the socket is then probably

http://www.cpu-world.com/CPUs/Core_i7/Intel-Core%20i7-3840QM%20Mobile%20processor%20-%20AW8063801103800%20-%20BX80638I73840QM.html

But I dare to doubt whether it runs with you.