17 R1, is it possible to upgrade my GPU?

It seems that my HD8970m is not functioning properly anymore (for some reason dell replaced my first GPU which was R9 290x with HD8970m by warranty, though I am not sure if it's normal to give different cards. I found this out recently as I am not knowledgeable with hardwares). Anyway, is there any possibility to replace this GPU with any other? For example some geforce from the same year that has same sockets or power consumption. I don't know what is required, so I hope someone can help me with that, will appreciate.

Not sure what my model is, but when I enter service tag it says: Alienware 17. Can I put my service tag here, to make it easier?

Thanks in advance