M15x - Question about upgrading CPU / GPU

Hello all!

I purchased an Alienware M15x Laptop a couple months ago and I've begun to realize that it does not perform as well as I need it to. I would like to upgrade my CPU and GPU, and I have a few questions regarding this process:

1) Is there even the option to send my M15x in to be upgraded and if so, how would I go about setting this up?
2) Will upgrading the CPU and / or GPU on my system void Dell's warranty?