People are getting their hands on the new M4 MacBook Air this week, which means they’re posting lots of discoveries about its performance (and the blueness of the new Sky Blue color). While editing photos in Lightroom Classic, YouTuber Vadim Yuryev noticed that the CPU workload was being handled almost completely by the laptop’s six efficiency cores.
Woah!! Apple’s M4 MacBook Air is pushing this CPU workload to all 6 of the Efficiency cores while the 4 Perfomance cores are barely being used. (Left photo)
Compare that to the M3 (right) where the 4 Perfomance cores are seeing a lot more use.
Photo editing in Lightroom Classic pic.twitter.com/y17D8G0ypB
— Vadim Yuryev (@VadimYuryev) March 13, 2025
Spotted by Wccftech, this behavior is interesting because the image editing software is so CPU-intensive that anyone would assume it needed the performance cores to run. This was certainly the case for the M3 MacBook Air, which Yuryev shows using all four performance and all four efficiency cores to get the work done.
We don’t know why this behavior has changed, how purposeful it is, or if it’s specific to Lightroom Classic — but the benefits could be significant. Keeping the efficiency cores busy and limiting the activity on the performance cores could improve battery life and keep temperatures down.
That said, we don’t know from Yuryev’s post how well the software is running while in this state — we can assume he’s pointing it out because it’s running fine but we don’t know for sure.
It’s also not entirely impossible that this is a bug of some kind — the performance cores are there to be used, after all, or else they’d be pointless. So the sheer amount of activity on the efficiency cores while the performance cores sit almost unused does seem quite odd.
With outlets like Wccftech and tech influencers everywhere experimenting with this new model, we’ll likely find out soon whether this was a fluke or an intended feature of the new MacBook Air.
Speech-to-text apps have flooded the App Store, making it easier than ever to type on our Macs with just our voice. I have previously covered one such app called TypeWhisper. However, there has been a dearth of good text-to-speech models, and most of the good ones are locked behind a subscription.
Ollama, an open-source app that lets you run local AI models on your computer, wants to change that. It works on macOS, Windows, and Linux, and your prompts are never stored or used for training.
Did you think hitting delete on your AI chatbot conversation actually makes it disappear? Georgia Tech researchers just proved that's not entirely true. They have built a forensic tool called ORISA that can dig deleted conversations from your phone and even rebuild them into a working chatbot session you can keep talking to.
How can ORISA bring deleted AI conversations back?
Touchscreen laptops have been around for years. You can get them in all sizes and shapes. Just not from Apple. For years, the Cupertino giant has treated the idea of a touchscreen MacBook the way I treat a meeting that could have been an email: with open contempt. However, Wednesday looks like the day the company could finally change its mind.
The latest Apple invite puts the “Pro and Tell” showcase in Los Angeles at 10 a.m. PT (1 p.m. ET) on October 28, 2026. Instead of a regular live-streamed keynote, it is an invitation-only, hands-on event for a handful of press and creators (similar to what the company did for the MacBook Neo earlier this year).