I have a maxed-out 16″ MacBook Pro from 2021. I have a 140W USB-C Power Adapter from Apple that I can use with it. I also have a Belkin Thunderbolt 3 Dock that can supply 85W.
I usually use the Mac as a stationary computer and I don’t normally use it for prolonged periods of time without a power supply, so the speed of charging is not important to me.
However, I am a software developer, so performance in general, and CPU speed in particular, is very important to me.
The Mac works fine with just the USB-C cable to the dock connected, and it does charge in that state. But I could also have both the dock and the power adapter connected, though it is less convenient to have two cables connected rather than one.
If I use just the dock, with the lower power, it can obviously take longer to charge, but that is not important to me. What I’m interested in: will the performance of the Macbook ever be negatively affected?
I know that the Mac will be slower if I have no power at all connected, but when power is connected, does the wattage of that power ever matter?
If I’m running a really heavy compilation, that uses all cores, can that go slower if I’m using a less powerful power supply?
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