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Leaked Internal Code Suggests Apple Is Testing M4 Ultra for Mac Pro

If validated, the chip would power the long-awaited Mac Pro refresh, restoring clear performance separation within Apple’s desktop family.

Overview

  • Macworld uncovered internal code entries labeled t8152 and the codename “Hidra,” matching Apple’s past Ultra-class chip naming conventions.
  • The current Mac Pro remains powered by the M2 Ultra, making it the only high-end desktop yet to transition to the latest M-series silicon.
  • Analysts say the code references offer a plausible reason for the Mac Pro’s extended delay as Apple refines its top-tier processor.
  • Industry experts caution that Apple frequently tests unreleased chips internally, and code leaks do not guarantee a commercial launch.
  • A recently spotted product roadmap entry and speculation on specs such as a 32-core CPU and 80-core GPU hint at what an M4 Ultra–powered Mac Pro could deliver