Alienware M17x R4 (2012), Ivy Bridge and Kepler Refresh

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The Alienware M17x is a large desktop replacement notebook that is not built with battery life performance in mind, and the model we tested packed some of the most powerful GPU and CPU technologies currently on the market with what could only be considered an afterthought for power consumption. Regardless, we wanted to see what battery life was like under moderately strenuous workloads. Here are the results from our Battery Eater Pro tests.

Battery Life Test
Heavy and Light Workloads



The downside to running all those beefy components is that the battery in these mobile monsters can't power things for very long. The M17x's 9-cell battery was just about equal with most of the field, although the Maingear and ASUS G74SX systems wrecked the curve.

Bear in mind how widely battery life can fluctuate. You can extend a battery's charge by opting for more efficient power profiles, not to mention simply manually adjusting things like screen brightness; and of course, less demanding tasks such as word processing or Web browsing won't suck the life out of the battery as fast. We test these systems essentially as-is, so there's room for improvement on these times. 
 

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