My 2018 15-inch MacBook Pro won't stop reaching high idle percentages when nothing is open

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Level 1

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My 2018 15-inch MacBook Pro won't stop reaching high idle percentages when nothing is open

I just finished factory resetting my MacBook Pro since it wouldn't stop idling at high percentages when nothing was in use, and even after hard resetting, it still stays at a constant 70-90% in idling with nothing open.

Is there anything I can do?

this MacBook is in perfect condition, no scratches and no past issues.

MacBook Pro references:

15-inch 2018 MacBook pro

Intel UHD Graphics 630 1536 MB

16 GB 2400MHz DDR4

Sequoia 15.5

MacBook Pro 15″, macOS 15.5

Posted on Apr 21, 2025 7:33 PM

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Answer 1

Top-ranking reply

D.I. Johnson

Level 8

39,977 points

Apr 21, 2025 9:03 PM in response to Sorellz

Unless I misunderstand the results of the Activity Monitor, your "high idle percentages" are nothing to be concerned about. This is simply telling you that 70-90% of the CPU is at rest, idling... not required to be doing any work. It's not a bad thing. The CPU cores are working efficiently as there are no processes that are taxing their capabilities.

In this example, you can see the CPU load is low. The System processes are using 2.24% of the capability of the CPU and User processes require 4.83% of the CPU capability. A total of about 7% of the performance capacity of the CPU.

The remaining CPU capacity, 92.93% is idling, waiting to be given work. Very little is being asked of the CPU.

If I am misinterpreting this data, I look forward to being corrected.

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My 2018 15-inch MacBook Pro won't stop reaching high idle percentages when nothing is open

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