What is the best processor I can put into the Toshiba L305D-S5893

I upgraded my Laptop CPU a long while back. not the same platform, but as long as the socket is the same and the FSB (for that gen it still has one I think) is rated for the same speed, then you will probably be fine.

The worst case scenario is that the cooling system can't keep the CPU cool. I found that my upgrade from celeron 1.4 to a centrino 1.73 (Oc'd to 2.4 Ghz) was not a problem. Results may vary. Still using that old thing too.

You may go with my configuration cpu as well as. Rest of the choice are left more.