GoKawiilIBM unveils dual-ISA mainframe core running ARM and z/Architecture natively
At Hot Chips 2026, IBM revealed a next-generation processor built on a 2nm node with 11 cores, each running at a 5.7 GHz base clock. The chip's key innovation is a core that can natively execute both z/Architecture and AArch64 instructions, switching between them within nanoseconds, a result of IBM's April partnership with Arm.