PSU sizing & cabinet heat calculator

Size the PSU too tight and the machine shuts down under load; oversize it and you waste money while the PSU runs in its low-efficiency range. This tool estimates both at once — the power you need and the heat released into the cabinet, because the two always go together.

Processor

CPU

Memory & storage

RAM SSD drives Mechanical HDD

Expansion cards

GPU / accelerator card Network / frame-grabber cards

Devices powered by the machine

PoE ports feeding cameras USB devices (external drives, readers…)

Installation conditions

Supply voltage Cabinet type

Estimated power draw —

Recommended PSU (with 30% headroom) —

Current at the selected voltage —

Heat released into the cabinet —

Cabinet may run hotter than ambient by —

What this number is for. This is a quick estimate to size the PSU and decide whether the cabinet needs ventilation. Actual power depends on the specific CPU and software load — for critical projects use the Max Power figure in the machine’s datasheet.

PSU sizing & cabinet heat calculator

Need help sizing the PSU and cabinet ventilation?