# 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.

<figure><img src="/files/eqnmW3DWpDcZ8kmGTlgu" alt=""><figcaption></figcaption></figure>


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