Arm’s CPU-first AI push gets teeth with Lumex

…And a new Mali at last.

September 10, 2025

David Harold

Arm’s Lumex CSS (Compute Subsystem) arrives as a hardened, 3nm-ready platform that pairs SME2-enabled C1 CPUs with the long-delayed Mali G1-Ultra. It shifts Arm from buffet-style IP to a ship-the-defaults platform: faster time to market for partners, less freedom to tinker. The CPU-first story finally has the software and silicon to back it, and the new GPU closes a credibility gap for gaming and hybrid AI graphics. Key numbers:• CPU (C1 + SME2): Up to 5× AI uplift; +25% device-level perf (C1-Ultra) and ~12% efficiency gain (C1-Pro). • GPU (G1-Ultra): ~20% graphics, ~20% AI inference, ~9% energy/frame; 2× ray tracing via

...

Enjoy full access with a TechWatch subscription!

TechWatch is the front line of JPR information gathering service, comprising current stories of interest to the graphics industry spanning the core areas of graphics hardware and software, workstations, gaming, and design.

A subscription to TechWatch includes 4 hours of consulting time to be used over the course of the subscription.

Already a subscriber? Login below

Arm’s CPU-first AI push gets teeth with Lumex

Enjoy full access with a TechWatch subscription!

This content is restricted

Login