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> Notebookcheck always isolates CPU power by measuring idle and draw from the wall. That's not actually isolating CPU power. To begin with, the CPU itself has
by AnthonyMouse 2mo ago
> Notebookcheck always isolates CPU power by measuring idle and draw from the wall.
That's not actually isolating CPU power. To begin with, the CPU itself has idle power draw. Measuring that way would favor a CPU that has worse power management because it would be excluding the draw the CPU itself fails to shed at idle.
It also gets it wrong the other way. The SSD etc. is using however much at idle but that isn't the amount it uses when running the benchmark. Many of them don't have very fine grained power management and will draw ~100mW at idle but consume close to full power under even moderate load.
- aurareturn 2mo agoYou 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.
- AnthonyMouse 2mo ago> 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?
- aurareturn 2mo agoOnce again, you lost my in what you're actually trying to argue. All we care about here is performance for the CPU, performance per watt, and performance per die area.