Hey there, I have a Dell XPS L401X (Late 2010) laptop which I brought from Dell. My question is that, I want to buy a better GPU from Nvidia and I have an Nvidia GeForce 245M Which Only has 1 GB VRAM and I literally can't play cool games with it.. so, is it possible to do so? to replace the GPU with another one? And I even want to put up another RAM chip, so, I have a 4 GB ddr3(or something) RAM, Should I only ttake 4 GB ddr3(again) RAM chip or is it fine like 2 GB DD-whatever ram?

Hopefully I get an answer soon, Thank you in Advance!