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CPU

Last Week on My Mac: Wobbling plates and bfloat16 support

Few acts can excite an audience as much as the plate-spinner darting between crockery threatening to wobble out […]

February 4, 2024 Macs, Technology

What has changed in CPU cores in M3 chips?

Little seems to have changed in CPU cores in M3 chips, if you read reviews. Dig a bit deeper and there are major changes, as explained here.

November 22, 2023 Macs, Technology

Game Mode revisited: why E cores are so important

Once you know how to configure an app to be able to use Game Mode, you can run better tests. Here are measurements of CPU and GPU performance for comparison between Full Screen and Game Mode.

November 16, 2023 Macs, Technology

Estimating energy use for Apple silicon chips

How much faster are P cores at running the same thread as E cores, and how much more energy do they require? And how do they compare with using the GPU?

November 7, 2023 Macs, Technology

M3 Macs: there’s more to performance than counting cores

A look at some of the factors determining the performance of new M3 chips compared to the M1 and M2 versions, and how not to compare them.

November 3, 2023 Macs, Technology

How does macOS manage virtual cores on Apple silicon?

T T Read More

Code run in a lightweight Virtual Machine can’t take advantage of the Efficiency cores of the host Apple silicon Mac. How then does Sonoma handle its threads?

October 23, 2023 Macs, Technology

How Game Mode manages CPU and GPU

How does Game Mode give highest priority access to CPU and GPU? An investigation of the involvement of P and E cores, and the GPU brings some surprises.

October 18, 2023 Macs, Technology

What does Game Mode do?

Apple claims it gives a game highest priority CPU and GPU access, and reduces Bluetooth input and audio latencies too. Does it, though?

October 17, 2023 Macs, Technology

What to do when a process uses too much CPU

T T Read More

The spinning beachball, a juddery interface, and fans running full pelt: what’s CPU doing in Activity Monitor, and what should you do about it?

June 15, 2023 Macs, Technology

Activity Monitor: meanings and misleadings

How to interpret various measurements reported in Activity Monitor, from % CPU to Energy Impact, and how they can be compared across different Macs.

August 13, 2022 Macs, Technology

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