I believe it has a modified Nvidia GTX 860M graphics card with 2GB of VRAM.
The GPU seems to be packing a lot of punch for its size in the reviews I've read, I guess the only draw back is that it is not upgradeable.
I could proably stretch to the i5 processor, the machine itself then has 8G Ram and a 1TB hardisk. TBH I am not after a top end machine just something neat and tidy that I can set in my tv cabinet with all the other junk and really I am going to be using it as, is a house pc and for playing ED. I'm not a big gamer anymore but couldn't not play ED loving it so far on my poor spec laptop.
I just didn't know if the i5\7 will make much difference for playing ED or not, as all models of the ALienware alpha come with the same GPU.
Cheers,
LS