I want to swap graphics card from 1 lappy to another?

[finality1]

I would like to take my graphics card from my dell xps which is a nvidia 8400 and put it in my alienware A51 which had an ati card in i heard that ati and nvidia are compatable. How do i do this please i need step by step please?

 

[N.Broekhuijsen]

You've double posted, Read my first reply. Its not possible... unfortunately