What changes when ultra performance mode is on vs off? Does this simply switch between the pre-defined Balanced and Dell power plans?ĮDIT: I found a page in the Dell Power Manager User's Guide, which explains it:ĭell Power Manager allows you to manage your system’s processor and cooling fan settings so that you can manage performance, system surface temperature, and fan noise. I can find no documentation for "Ultra performance mode". When I press Fn-T, I see a Windows toast saying either "Ultra performance mode is On" or "Ultra performance mode is Off". I found that pressing Fn-T (function key and 'T') on my Dell Inspiron 7791 2-in-1 laptop toggles "Dell ultra performance mode".
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