IBM Unveils Dual-ISA Chip Running ARM and z/Architecture

IBM has built its first dual-ISA processor core that natively runs ARM and z/Architecture instructions, part of a next-gen mainframe AI chip built on a 2nm node with 11 cores at 5.7 GHz.

IBM's dual-ISA core raises a bigger question for chip design. If one core can natively run two very different instruction sets, does the industry still need separate processor lines for enterprise systems and AI workloads? Or does merging architectures on a single chip become the more efficient long-term path, reshaping how future hardware, from mainframes to the devices people wear, gets built?

https://www.bonuz.xyz/en/blog/ibm-dual-isa-chip-arm-z-architecture