Well that's easy to get. As adamqd said, it's not in the name. To be honest, Alienware is like a clothing brand. It's way overpriced, only due to popularity and good look.
They aren't amazing either. I had to get a new desk to fit it on, cause the little bastard's huge. The fans can be quite loud at times and it gets outdated quickly. I can barely run Dragon Age 2 on max settings, and I bought this rig in January, for £1,200 approx.