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Power And Heat

GeForce GTX 880M, 870M, And 860M: Mobile GPUs, Tested
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So far, the GeForce GTX 770M looks to be slightly faster than the 860M. And yet, it also uses less power. Other modules follow the power curves we'd expect, given their performance. I wouldn't be surprised to see the next generation of gaming notebooks including larger and heavier coolers to contend with the additional heat. 

Thermals aren't an issue for Origin PC’s full-sized Eon17-S, though. I didn’t need to adjust its fan speed at any point during our experimentation. Rather, the system sets its fans to roughly 50% under load, regardless of the graphics module you have installed. If, at some point in the future, you find your Eon17-S to be noisy, it’s probably time to blow the dust out.

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