Dell Alienware X51 Review | 2013 Haswell Model | Digital Trends
Dell Alienware X51 AX51R2-1438BK Desktop PC with Intel Core i3-4150 Processor, 6GB Memory, 1TB Hard Drive and Windows 8.1 (Monitor Not Included) - Walmart.com
Alienware Gaming Desktop, Intel Core i7 i7-4770, 8GB RAM, 2TB HD, DVD Writer, Windows 8.1, X51 R2 - Walmart.com
Best Buy: Alienware X51 Desktop Intel Core i7 8GB Memory 1TB Hard Drive AX51R2-5722BK