Robots have a different compute problem

A robot cannot treat power, heat and latency as secondary concerns. It must sense the world, make decisions and act in real time while sharing a battery and thermal budget with motors, sensors, communications and safety systems.

Perception is continuous

Cameras, depth sensors, lidar, radar and inertial sensors can produce a constant stream of data. AI compute must process that data quickly enough for the robot to react. Sending every frame to a remote data centre adds network dependence and latency, so much of the critical inference needs to happen on the machine.

Performance per watt matters more than peak TOPS

Peak accelerator throughput is useful only if the robot can use it within its power envelope. An architecture that is sized around the target models can avoid spending energy on unused general-purpose capability and reduce cooling requirements.

Sensor fusion stresses memory and scheduling

Robotic workloads often combine several streams with different rates and timing requirements. Moving data efficiently between memory, accelerators and control software can matter as much as the arithmetic itself. Deterministic scheduling helps when decisions must arrive on time, not merely fast on average.

On-device vision-language models change the requirement

As robots use multimodal and vision-language models, the compute stack must support both classic perception and transformer-style operations. This increases the importance of memory capacity, bandwidth and efficient attention-related operations.

For physical AI, the useful metric is not maximum compute in isolation. It is the amount of dependable AI work delivered within the robot’s battery, thermal and response-time constraints.

Questions to ask when selecting robotics compute

  • How many cameras and sensors must run concurrently?
  • What is the worst-case acceptable latency?
  • What power can the compute module consume continuously?
  • Which models must run today, and which are likely next?
  • How much memory bandwidth is required?
  • Does the platform need deterministic execution or safety isolation?
  • Can it operate without a continuous cloud connection?

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