* A network of computers: This is accurate and often used in technical contexts.
* A cluster of computers: This implies a group of computers working together.
* A farm of computers: This usually refers to a large group of computers used for specific tasks like data processing.
* A system of computers: This suggests a group of interconnected computers working as a unified whole.
You could also use more creative terms like:
* A hive of computers: Evokes a sense of busy activity.
* A constellation of computers: Implies a group of computers working in harmony.
Ultimately, the best term depends on the specific situation and the desired effect.