What is often the biggest facility constraint when adding high-density GPU racks?
Why B is the answer
Power and cooling
GPU racks draw far more power than general-purpose racks, and all of it becomes heat.
In detail
- Dense GPU racks are limited first by power and cooling.
- Nearly all the power drawn becomes heat.
Use case
An illustrative scenario, not a real incident.
A data center has floor space for 40 racks, but only enough power and cooling for ten of the new GPU racks.
See it in different ways
flowchart LR A["GPU rack density"] --> B["Power per rack"] B --> C["Heat to remove"] C --> D["Air or liquid cooling"] D --> E["Floor and facility check"]
stateDiagram-v2 [*] --> Power Power --> Cooling: heat follows power Cooling --> Floor: weight limits Floor --> Delivery Delivery --> [*]
flowchart LR S0["Rack power needs"] --> S1["Cooling capacity"] --> S2["Plan the layout"]
Key point: Power and cooling often limit GPU racks.
Why the other options are wrong
- A. Network port count
- Port count is a detail.
- C. Rack count
- Rack count follows from power.
- D. Cable length
- Cable length is a detail.