Quote from: jeremy on December 24, 2020, 01:13:28That would be very difficult to measure, because it would involve measuring the efficiency of the screen as well. The efficiency of a device is not the efficiency of the processor and its fans. There's actual use for a device on a minimal load with just the screen on, like word processing.
"more power efficient"
I think power efficient needs to be clarified. Is the Dell actually exhibiting higher performance/watt in your test, or is it simply drawing less power? If it's simply drawing less power, then it should be noted as "consumes less power," not "more power efficient." That phrase is further complicated by your own "load average" showing the Book 13 consuming less power than the XPS 13.
A close analogy is a city bus vs a small hatchback. Sure, the bus uses more energy, but it can also carry a lot more people, lowering the actual energy consumption per person (assuming a loaded bus - which can be assumed in the analogy, since Notebookcheck is extrapolating this observation when the laptops are under medium to heavy loads, not idle).
Quote from: A on December 24, 2020, 03:23:17
I've said it before, I'll say it again. Dell's biggest issues have been poor thermals. And those poor thermals hamper their entire system.
They really need to get their thermals straight unless their market segment is people who want a laptop that doubles as a grill.