What we’re expecting
Ultra 4 is expected to carry a new S-class chip, the first watch silicon upgrade since the S9 in 2023. The designation is unconfirmed. Some outlets call it S12, but Apple has not named it and details stay scarce.
Apple Watch Ultra 4 is reportedly getting a new processor, the first chip change in a while, since recent models have leaned on the same S10 architecture. Digitimes says power efficiency will improve, whether that comes from the new chip, new sensors, or both. Apple hasn't named the chip, so the specifics are still fuzzy, but a processor upgrade is the kind of thing that gives existing owners a reason to trade in.
What chip does Apple Watch Ultra 4 use vs others?
Apple Watch Ultra 4S12 / T8320, 3nm (expected)
Samsung Galaxy Watch 9Exynos W1000 (contested)
Apple Watch Series 11S10
Samsung Galaxy Watch 8Exynos W1000
Apple Watch Ultra 3S10
Apple Watch Series 12S12 / T8320, 3nm (expected)
Galaxy Watch Ultra 2Snapdragon Wear Elite (3nm)
Galaxy Watch Ultra (current)Exynos W1000 (3nm)
Pixel Watch 4Snapdragon W5 Gen 2 + co-processor