You can never fully isolate CPU power. Even software reading of CPU power is not always accurate.
The most accurate is reading from the wall. Thats what Notebookcheck does.
For all intents and purposes, it is good enough to get a read on CPU efficiency. Furthermore, if you are comparing equivalent systems, it is good enough to compare the two.
> You can never fully isolate CPU power. Even software reading of CPU power is not always accurate.
And what results from this when you compare system with a 15W CPU to one with a 60W CPU on performance per watt when both systems have an additional 10W draw from non-CPU components?
The most accurate is reading from the wall. Thats what Notebookcheck does.
For all intents and purposes, it is good enough to get a read on CPU efficiency. Furthermore, if you are comparing equivalent systems, it is good enough to compare the two.