M5 Ultra: How Apple Fuses Two Dies Into ‘Its Most Powerful Chip Ever’

M5 Ultra is the chip Apple calls, in its own words, “Apple’s most powerful chip ever.” Announced August 25, 2026, it ships only in Mac Studio, where it starts at $5,499. What sets M5 Ultra apart from every other chip in Apple’s current lineup is not just its size, but how Apple builds it: by fusing two dies together. M5 Ultra belongs to the same...