At GTC 2026, Jensen Huang said something that made a lot of people pause: the PC is being reinvented. He and Microsoft launched RTX Spark with the N1X chip, cramming petaflop-level AI compute into a desktop form factor. On the surface it looks like another hardware upgrade, but this time the use case is genuinely different.

Previous PC performance gains served humans: faster rendering, faster compiling, smoother gaming. This round of compute improvement is largely aimed at AI agents. Agents need to run vision-language models locally, understand screen content in real time, and execute GUI operations. These workloads demand sustained compute resources with a load profile completely different from human computer use.

Agents Need Different Hardware Than Humans

Humans use computers in bursts: typing, clicking, waiting for responses. The load is pulsed. Agents use computers continuously: constantly capturing screenshots, interpreting the display, making decisions, executing operations. The load is steady-state. This means agents need memory bandwidth and energy efficiency more than peak compute.

This explains why Apple's M-series chips perform well in on-device AI scenarios. The unified memory architecture lets GPU and CPU share the same memory pool without data transfers between them, which is highly efficient for model inference that frequently accesses large parameter sets. M-series energy efficiency also suits long-running agent workloads without thermal throttling.

NVIDIA's RTX Spark takes another path: more GPU compute and more memory (128GB unified) to handle on-device AI demands. The N1X chip has higher total compute than M-series, better suited for heavy workloads. Different tradeoffs, same destination: AI agents running on the device in front of you.

There's Already a Complete Agent Stack on Mac

What's worth noting is that the on-device AI agent stack on Apple's ecosystem is already fairly complete. M-series chips at the hardware layer. MLX at the framework layer. Open-source inference acceleration like the Cider SDK filling in activation quantization. Purpose-built vision-language models at the model layer. And full GUI automation toolchains at the agent layer.

Mininglamp's open-source Mano-P is a GUI agent that runs this entire stack. It's purely vision-driven, runs locally on Mac, requires no cloud API calls, and keeps all screenshots and operation data on-device. On Apple M5 Pro it achieves roughly 80 tokens/s decode speed, which is smooth enough for daily GUI automation tasks.

From chip to framework to model to agent, this pipeline is now operational on Mac. If you're exploring on-device AI development, you can install via brew tap Mininglamp-AI/tap && brew install mano-cua. The project is fully open-source under Apache 2.0. Details on GitHub.

Jensen Huang said PCs are being reinvented. He's right. But the reinvention isn't just about hardware specs — it's about the PC's role in the AI era. It's no longer just a tool for humans. It's becoming a home for AI agents.