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Last Week on My Mac: The slim hope of recovery

Monterey changes the way that Recovery works on M1 Macs, making them more like Intel Macs by using a paired Recovery volume. But that could spell trouble.

May 15, 2022 Macs, Technology

Cormorant 1.4: getting more from Apple Archive

Now has three presets to control speed and energy consumption of compression and decompression, together with complete custom control.

May 12, 2022 Macs, Technology, Updates

Inside Apple Archive: performance and control

How to work out how many threads and which cores are needed to achieve a compression rate up to 1.7 GB/s, and how to estimate power and energy.

May 11, 2022 Macs, Technology

What’s the fastest way to transfer files with M1 Macs?

AirDrop is quick, convenient and as slow as you’ll get. Ethernet all too often runs at only 1 Gb/s. Here are the fastest solutions involving M1 models.

May 9, 2022 Macs, Technology

Running tasks on E cores can use a third of the energy of P cores

Using a test of compressing a 1 GB file with AppleArchive, measurements of power used by core clusters show how efficient using the E cores really is.

May 3, 2022 Macs, Technology

Don’t trust Activity Monitor on M1 Macs

Using CPU % or Energy values in Activity Monitor appears to show that running code on E cores is less efficient than on P cores. Don’t believe a word of it.

May 2, 2022 Macs, Technology

Which SSDs can you boot your M1 Mac from? Do hard disks work too?

Which of the external disks tested can be used to boot from? Do they work reliably with Secure Boot? Could you boot from an external hard disk?

April 29, 2022 Macs, Technology

Are Thunderbolt SSDs more consistent than USB?

T T Read More

Armed with just a couple of flashy Thunderbolt NVMe SSDs and his home-made benchmarking app, we discover whether Thunderbolt is any better than USB 3.x.

April 28, 2022 Macs, Technology

Why more apps need speed controls

If apps control the Quality of Service, which sets how macOS allocates them to different processor cores in an M1 chip, how can we have any control?

April 27, 2022 Macs, Technology

How macOS manages M1 CPU cores

T T Read More

From the 8 cores of the original M1 chip to the M1 Ultra’s 20, this is how macOS manages threads from apps, services and other code.

April 25, 2022 Macs, Technology

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