GoKawiilApple Watch Ultra 4 upgrades chip, RAM and health sensors over Ultra 3
Apple's new Ultra 4 keeps the same design as Ultra 3 but adds a new S11 chip, doubles RAM to 4GB, and introduces a redesigned Health Sensing System with upgraded heart rate and HRV tracking. New features include high-frequency background heart rate monitoring, a heart rate watch face complication, more frequent HRV readings, a new Recovery HRV metric, and more accurate real-time step tracking.
GoKawiil's interpretation of the reporting above, not reported fact.
This marks one of Apple's largest internal overhauls of the Watch's sensor architecture, signaling a stronger push into health and recovery monitoring rather than just design refreshes. The added chip power and memory also suggest Apple is preparing the Watch platform for more demanding on-device health analysis and future software features.
- S11 chip and doubled 4GB RAM boost overall performance
- New Health Sensing System enables deeper heart rate and HRV tracking
- Design remains unchanged from Ultra 3, focus is on internal upgrades
Apple Watch Ultra 4 — If the article's rundown of the S11 chip, doubled memory, and the all-new Health Sensing System has you convinced, the Ultra 4 itself is the buy. It keeps the rugged titanium Ultra design while adding Apple's newest wearable chip and upgraded heart rate sensing.
See Apple Watch Ultra 4 on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: 9to5mac.com — Ryan Christoffel, 2026-09-11
Published there as: “Apple Watch Ultra 4 vs Ultra 3: Here’s everything new”
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