IBM and Arm Unveil Dual-Architecture CPU for Seamless Enterprise Computing

IBM and Arm have unveiled their first joint project, a dual-architecture CPU that can run both z/Architecture and AArch64 instructions natively on the same core. This marks a significant breakthrough in enterprise computing, as it allows for seamless integration of both ecosystems on a single machine.

The new processor is fabricated on a 2-nm process with 11 high-performance cores running above 5.7 GHz, compared to eight cores at 5.5 GHz in Telum II. Each core has a 36-MB private L2 cache, and the system can scale to hundreds of cores and tens of terabytes of memory.

The Arm side is a full hardware implementation with 2,792 AArch64 instructions, including the SVE and SVE2 vector extensions, and carries Arm SystemReady certification. The core also reconciles the byte-order difference between the two architectures, since z/Architecture is big-endian and AArch64 is little-endian.

IBM's new solution supports two ISAs on a single core, eliminating the need for separate hardware or emulation. This will be particularly beneficial for enterprise teams who need to run both ecosystems at full speed without incurring significant overhead.