DO NOT BUY AN ALIENWARE PC.
I overpaid for an Area-51 7500 as my primary non-trading computer (I use a great computer from tradingcomputers.com for trading) because I was tired of dealing with Dell (even though Dell owns Alienware).
The computer did not work out of the box and they are very difficult to deal with. After 5 hours on the phone with non english technical support and customer service they told me an on site technician can take a look at it in a week or two, but if I want to return it I have to pay the return shipping and a 15% restocking fee.
Yes they look cool, but that is all I can say for them. After you buy it you will never again speak to a person whose first language is English.