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How effective is undervolting?

Steven Mal

Honorable
Jun 8, 2013
17
0
10,560
How effective is undervolting? I'm considering getting 980M SLI instead of only one 980M in my new laptop but I'm worried about the heat that they will produce. Should I bother undervolting or try a different method to keep my laptop cool? I've never tried undervolting before so I'm wondering if I should bother to try it.
 


I'm trying to decide between one of Sager's 17.3 inch models with a disk drive, probably the NP9377, or MSI's GT80.
 


Could you be more specific? How would you find out if the laptop is (or isn't) made for a 980 or 980 SLI?