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MacRumors
(20-Core M1 Ultra, 128GB) Sluggish performance, Safari taking 30% my CPU, and other things...
Recent reports from users indicate that the 20-Core M1 Ultra chip is delivering sluggish performance, with Safari reportedly consuming 30% of CPU resources. This has sparked discussions on the efficiency and performance benchmarks of Apple's latest hardware, highlighting concerns that may need addressing to enhance user experience.
MonitorConfidence: MediumShort term horizon
Published 20 Aug 2026, 13:45 UTC1 min read
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Summary
TL;DR
- Users experiencing sluggish performance on the M1 Ultra
- Safari taking up significant CPU resources
- Concerns raised about chip efficiency
- Discussions happening in tech forums
- Potential implications for user experience
Interesting facts
- The 20-Core M1 Ultra was anticipated to deliver high efficiency and performance
- High CPU usage by Safari raises questions about browser optimization on new hardware
Coverage gaps
- Details on specific circumstances triggering high CPU usage