What a bottleneck does
The tighter of power and cooling determines the shared retained-output factor. If demand is twice the available capacity, the workshop retains about half its output before any rack-local constraint. Utility upgrades can therefore improve every active rig.
Park unused equipment, choose Economical or a lower-demand module, or upgrade the actual bottleneck. Buying more cooling does not fix a power shortage. A vented active rack adds another 20 W to shared demand.
The rack has local limits too
Each industrial power level beyond level 2 adds 140 W of local rack capacity. Each industrial cooling level beyond level 2 adds 120 HU. These increases work in either rack mode.
A rack can fit inside shared workshop capacity and still hit its local ceiling. Inspect both constraints. Dispatches need at least 80% retained rack output; modern certifications impose their own higher requirements.
| Mode | Base local power | Base local cooling | Tradeoff |
|---|---|---|---|
| Quiet | 160 W | 110 HU | No extra shared ventilation demand. Required for Pascal. |
| Vented | 240 W | 180 HU | Adds 20 W shared demand while active. Required for Blackwell. |