The best cpu to upgrade with dell 1545 laptop?

[Xuan Zheng]

I have a Dell 1545 laptop with Intel core 2 duo T6400 CPU installed, what's the best CPU can be put in this machine? thanks

 

[ewok93]

In laptops replacing the CPU is very rarely an option. It's almost always soldered in, if not, the BIOS is often locked, and after that, the BIOS may not be compatible.

 

[Xuan Zheng]

I've watched youtube videos that you could actually upgrade this laptop with a better cpu, just want to confirm it here.