Alienware M15x (Intel Core i7 720QM review: Alienware M15x (Intel Core i7 720QM

Juice box
Alienware M15x Performance (Avg watts/hour)
Off (60%) 0.36
Sleep (10%) 1.73
Idle (15%) 36.36
Load (15%) 125.68
Raw kWh Number 216.33
Annual Energy Cost $24.55

As one would expect, the Alienware M15x won't run very long away from a wall socket. Even with the extended nine-cell battery (required by the Core i7 920 processor), the system ran for 1 hour and 46 minutes on our video playback battery drain test. That's alright for a high-powered desktop replacement, but very low for a 15-inch system with at least pretensions of portability.

Alienware includes an industry-standard one-year parts and labor warranty with the system, which includes in-home service. Upgrading to a three-year plan will cost an extra $299, and several other options are available for purchase, including "Tech Team" coverage for all your Dell products. Support is accessible through a 24-7 toll-free phone line, an online knowledge base and driver downloads.

Multimedia multitasking test (in seconds)
(Shorter bars indicate better performance)

Adobe Photoshop CS3 image-processing test (in seconds)
(Shorter bars indicate better performance)

Apple iTunes encoding test (in seconds)
(Shorter bars indicate better performance)

Unreal Tournament 3 (in fps)
(Longer bars indicate better performance)
1,280x800, 0X AA, 0X AF*  
1,440x900, 4X AA, 8X AF*  
1,920x1,200, 4X AA, 8X AF*  
Alienware M15x @ 1,280x768 / @ 14x10 / @ 19x10
165.7 
128.9 
99.4 
Asus W90VP-X1 @ 1,280x768 / @ 14x10
143.3 
129.6 
119.4 
iBuyPower M865TU @ 1,680x1050
142.7 
111.4 
94.1 
Gateway P-7808u
124.8 
100.3 
N/A
Asus G51J-A1 @ 14x10 / @ 19x10
118.2 
102.4 
78.8 

Video playback battery drain test (in minutes)
(Longer bars indicate better performance)

Find out more about how we test laptops.

System configurations:

Alienware M15x
Windows 7 Ultimate (64-bit); 2.0GHz Intel Core i7-920XM; 4GB DDR3 SDRAM 1066MHz; 1GB Nvidia GeForce GTX 260M; 500GB Seagate 7,200rpm

Asus G51J-A1
Windows 7 Home Premium (64-bit); 1.6GHz Intel Core i7-720QM; 4GB DDR3 SDRAM 1066MHz; 1GB Nvidia GeForce GTX 260M; (2) 320GB Seagate 7,200rpm

Toshiba Qosmio X505-Q850
Windows 7 Home Premium (64-bit); 1.6GHz Intel Core i7-720QM; 6GB DDR3 SDRAM 1066MHz; 1GB Nvidia GeForce GTS 250M; HDD #1: 64GB, Toshiba SSD / HDD #2: 320GB Hitachi 7,200rpm

Gateway P-7808u
Windows Vista Home Premium SP1 (64-bit); 2.0GHz Intel Core 2 Quad Q9000; 4GB DDR3 SDRAM 1066MHz; 1GB Nvidia GeForce 9800M GTS; 500GB Western Digital 5,400rpm

Asus W90VP-X1
Windows Vista Home Premium SP1 (64-bit); 2.8GHz Intel Core 2 Duo T9600; 6GB DDR2 SDRAM 667MHz; 512MB Dual ATI Mobility Radeon HD 4870 X2; 320GB Seagate 7,200rpm

Malibal Veda Clevo M980NU
Windows Vista Ultimate (64-bit); 2.53GHz Intel Core 2 Quad Extreme QX9300; 8GB DDR3 SDRAM 1066MHz; (2) 512MB SLI Nvidia GeForce GTX 280M; (Nvidia Stripe) 250GB 5,400rpm / 80GB Solid Sate Drive

iBuyPower M865TU
Windows Vista Home Premium SP2 (64-bit); 2.93GHz Intel Core 2 Duo T9800; 4GB DDR3 SDRAM 1066MHz; 1GB Nvidia GeForce GTX 260M; 500GB Seagate 7,200rpm

What you'll pay

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    Where to Buy

    Alienware M15x (Intel Core i7 720QM, 250GB HDD, 3GB)

    Part Number: DKCWFW1 Released: Oct. 15, 2009

    As Reviewed: $1,349

    Check manufacturer's site for availability

    Quick Specifications See All

    • Release date Oct. 15, 2009
    • Installed Size 4 GB
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