Can I Change the CPU on this Laptop?

[Aazure]

I've had my Toshiba Satellite C55-A5310 for two years, and it has come to my attention that it is not very fast for what I use it for (games, videos, etc.) and I want to change the CPU for something better OR get a better graphics card if possible. I would buy a new laptop, but for it to meet what I want is much more expensive than just replacing the CPU, so I was wondering if this laptop's CPU is able to be changed out. I know some Toshiba laptops have their CPU soldered to the motherboard so I was just making sure. And if I can change it out, would I have to keep it within the Intel i3's or could I get any Intel related CPU. Thank you in advance! =D

Edit: The current CPU is an Intel i3-3120M 2.50 GHz

 

[LookItsRain]

You should be able to upgrade to any intel mobile ivy bridge, but upgrading laptops is always not guaranteed, so you would need to know your motherboard model.

 

[Aazure]

You should be able to upgrade to any intel mobile ivy bridge, but upgrading laptops is always not guaranteed, so you would need to know your motherboard model.

The model of my motherboard is a Portable PC (U3E1)? I used the program Speccy to find this so I don't know if it's accurate.