RE: m17x R4 Graphics upgrade to New Gen Graphics
We didn’t test those video cards in the M17XR4 so there is no way for us to assure you that they will fit properly.
I will recommend you to ask in modification forums like Notebook review or Alienware Arena so they can provide you a better reference.
Dell | Alienware Technical Support
Opening your case does not void your warranty! Check out Alienware Artificial Intelligence
I can't always reply to PM's, if you need extra assistance visit: