ARM has announced a complete processor architecture overhaul with new C1 CPU cores and Mali G1 GPUs, retiring the iconic “Cortex” branding after years of dominance. The new lineup delivers up to 25% performance improvements while prioritizing AI workloads through innovative SME2 technology.

Major Architecture Announcement: Complete Rebrand & Redesign

ARM’s latest announcement represents the most significant mobile processor update in years, introducing the Lumex platform with entirely new naming conventions and AI-focused design philosophy.

New C1 CPU Lineup: Performance & Efficiency Breakdown

CPU Core	Replaces	Performance Gain	Efficiency Improvement	Target Market
C1 Ultra	Cortex X925	+25% (with 3nm)	28% more efficient	Flagship smartphones
C1 Premium	Cortex X930M	Same as Ultra	35% smaller area	Sub-flagship devices
C1 Pro	Cortex A725	+11% performance	26% more efficient	Mid-range/gaming
C1 Nano	Cortex A520	+5-8% performance	26% more efficient	Background tasks

Source: ARM official announcement and technical analysis

Revolutionary GPU Lineup: Mali G1 Series

ARM’s graphics overhaul introduces the Mali G1 family with dramatic performance improvements, especially for ray tracing and AI workloads.

ARM Unveils Revolutionary C1 CPUs & Mali G1 GPUs: Up to 25% Performance Boost, AI-First Design

Mali G1 GPU Performance Matrix

GPU Model	Core Count	Performance Boost	Key Features
Mali G1 Ultra	10+ cores	2X ray tracing, 20% raster	RTUv2, AI acceleration
Mali G1 Premium	6-9 cores	20% performance	Mid-range efficiency
Mali G1 Pro	1-5 cores	20% performance	Entry-level optimization

Game-Changing SME2 Technology: AI Revolution

The most significant innovation is Scalable Matrix Extension 2 (SME2), a shared external accelerator that transforms AI performance across all cores.

SME2 Benefits:

5x faster AI performance for machine learning tasks
3x more power efficient AI computations
4.7x lower latency for speech-based workloads
2.8x faster audio generation for real-time applications

Architecture Deep Dive: Technical Innovations

C1 Ultra: Flagship Performance

25% faster than Cortex X925 (12% IPC + 3nm scaling)
4.1GHz maximum frequency vs 3.6GHz previous generation
2,000 instructions in flight (vs 1,500 in X925)
33% increase in L1 instruction-cache bandwidth

Enhanced Gaming & Ray Tracing

The Mali G1 Ultra introduces RTUv2 (Ray Tracing Unit version 2) delivering:

40% higher framerates in ray-traced games
Hardware-accelerated traversal replacing compute shader methods
Single ray model for better incoherent ray handling
Separate sleep mode for power efficiency

Market Impact: Competitive Positioning

Key Competitors:

Apple A19/A19 Pro: Everest and Sawtooth cores
Qualcomm Snapdragon 8 Elite 2: Next-gen Nuvia cores
MediaTek Dimensity 9500: First to use C1/G1 architecture
Samsung Exynos 2600: Expected second implementation

First Implementations: What to Expect

MediaTek Dimensity 9500 is confirmed as the first chipset featuring:

2x C1 Ultra cores for peak performance
6x C1 Pro cores for sustained workloads
Mali G1 Ultra GPU with full ray tracing capabilities
SME2 acceleration for AI tasks

Samsung Exynos 2600 expected to follow with similar configuration optimized for Galaxy devices.

For detailed processor comparisons and mobile chip analysis, explore our semiconductor coverage and mobile technology guides.

Industry Implications: AI-First Future

This announcement signals ARM’s strategic pivot toward AI-centric computing:

Platform Integration:

Tighter foundry relationships with TSMC for optimized designs
Turnkey solutions reducing time-to-market for partners
Complete platform approach vs individual component licensing
AI software stack integration for developers

Timeline & Availability

Immediate Impact:

Q4 2025: MediaTek Dimensity 9500 announcement expected
Q1 2026: First smartphones with C1/G1 architecture
H1 2026: Widespread adoption across flagship devices
2026+: Trickle-down to mid-range segments

Bottom Line: Architecture Revolution for AI Era

ARM’s C1 CPU and Mali G1 GPU announcement represents more than incremental improvements – it’s a fundamental architectural shift toward AI-first computing. The combination of 25% performance gains, 28% efficiency improvements, and revolutionary SME2 AI acceleration positions ARM strongly against Apple and Qualcomm competition.

The retirement of “Cortex” branding after years of market dominance signals ARM’s confidence in this new direction. With MediaTek Dimensity 9500 leading the charge, 2026 smartphones will deliver unprecedented AI capabilities alongside traditional performance improvements.