Power and Cooling Requirements for Multi-GPU Workstations
High-end workstation GPUs draw serious power and generate real heat. A practical guide to planning electrical and cooling needs before you deploy.
A single high-end workstation GPU can draw 300W or more under sustained AI workload. Put several in one system, and the electrical and thermal planning needed starts to resemble a small server room rather than a desktop build.
Power Draw by Configuration
Approximate sustained draw at ~300W/card under AI workload. Actual draw varies by model and workload.
Your Pre-Install Checklist
1. Calculate maximum, not average, power draw. Add up the peak draw for every card you're installing. AI workloads spike, and average-usage provisioning leaves no headroom for the moments that actually matter.
2. Confirm your circuit's actual rated capacity. Many home offices and even commercial spaces have circuits that aren't rated for sustained high-density draw. Check with an electrician before hardware arrives, not after a breaker trips mid-training-run.
3. Build in 20%+ headroom. Power supplies and circuits both perform better, and last longer, running comfortably under their rated maximum.
4. Verify chassis airflow, not just fan count. Confirm intake matches exhaust capacity, and that there's genuine physical clearance between cards for air to move through them.
5. Plan for ambient room temperature. A multi-GPU system running sustained workloads raises the temperature of the room it's in. If you're running this regularly, room-level cooling needs the same planning as chassis-level cooling.
6. Consider Server Edition cards past 4 GPUs. If you're hitting the limits of workstation-chassis cooling, server-edition variants are built for rack-mounted, high-airflow environments. See our Buy section for Server Edition options.
The Practical Takeaway
Both of the two items most worth getting right on paper before hardware arrives: your circuit's rated capacity against your calculated peak draw with headroom, and your chassis's actual airflow design against the specific cards you're installing. Both are far cheaper to fix before installation than after a thermal shutdown mid-project.