Apple's M5 Ultra Packs Four Dies, Hits 512GB Unified Memory

Apple's M5 Ultra, announced August 25, 2026, links two dual-die M5 Max chips via next-generation UltraFusion — a quad-die package, a first for M-series SoCs. It scales to 512GB of unified memory with 1.2TB/s bandwidth, 50 percent above the M3 Ultra. The chip ships in the Mac Studio starting at $5,499; availability begins September 22, 2026.