> For the complete documentation index, see [llms.txt](https://wiki.pulsar.game/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.pulsar.game/game-systems/cpu-capacity.md). # CPU Capacity [**Motherships** ](/assets/structures/mothership.md)have a **CPU capacity** stat that serves as a **supply cap for Units.** Constructing and controlling a [Unit ](/assets/units.md)requires a certain amount of CPU. Different types of Units may have different CPU requirements. Also, as Units level up they will generally require more CPU. A Unit cannot be constructed if the Mothership constructing it does not have enough CPU left to control it. When a Unit is destroyed, it stops drawing CPU from the Mothership. Leveling Up a Mothership will increase its CPU capacity.