Sophia Windsor
[ Gearbest Technology News]Recently, a developer discovered two unreleased Apple self-developed chips in the iOS 26.3 RC code, with model numbers T6051 (H17C) and T6052 (H17D). According to Apple's chip naming rules, these two chips may correspond to the M5 Max and M5 Ultra versions, while the expected M5 Pro chip (T6050 H17S) has not yet appeared in the code.
Code analysis shows that the “C” suffix in H17C continues the naming tradition of Apple's Max chips. Previously, M1 Max to M4 Max all used this logo; the “D” suffix in H17D is consistent with the naming method of M1 Ultra to M3 Ultra. It is worth noting that Apple introduced a core number differential naming strategy for the first time in the M3 Max series. The 14-core version uses the H15M logo, and the 16-core version uses H15C. The H17S logo that did not appear this time should theoretically correspond to the M5 Pro chip, but only the H17G logo of the standard version of the M5 chip was detected in the code.
Some analysts pointed out that there are three possibilities for the current code missing M5 Pro: first, the chip has not yet completed development verification, second, Apple is adjusting the naming system, and third, Apple will give priority to launching high-end MacBook Pro models equipped with M5 Max/Ultra. Earlier supply chain news said that Apple plans to release a MacBook Pro equipped with a new generation M5 chip in the next few weeks, of which the 14-inch and 16-inch models may be equipped with M5 Pro or M5 Max chips.
In addition, rumors about the M5 Ultra chip are highly related to Apple’s unreleased Mac Studio product line. It was previously reported that Apple is developing a Mac Studio workstation equipped with an M5 Ultra chip, and its performance is expected to be more than 40% higher than the existing M4 Max version.
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