Dell Alienware M17X R3

Mainboard - Intel HM67
Processor - Intel Core i7 2GHz
RAM / Storage - 4GB / 256GB / Blu-ray reader
Graphics - Nvidia GeForce GTX 460M
Harddisk - Samsung SSD PM810, 256GB 
                 - 470-series MLC SATA 3Gbps
Connections - 4x USB, HDMI, eSATA
Height - 54mm
Width - 406mm
Depth - 321mm
Weight - 4kg

Dell XPS 15Z

OS - Win 7 Home Premium
Processor - Intel Core i7 2620M 2.7GHz
Graphics - Nvidia GeForce GT 525M
Memory - 8GB
Storage - 500GB
Screen - 15.6-inch, 1920 × 1080
Connectivity - Wi-Fi, 2x USB, eSATA, HDMI, mini DP
Height - 268mm
Width - 385mm
Depth - 27mm
Weight - 2.6 kg