Artificial intelligence (AI) is growing fast, and so is the number of computers that power it. Behind the scenes, this rapid growth is putting a huge strain on the data centres that run AI models. These facilities are using more energy than ever.
AI models are getting larger and more complex. Today’s most advanced systems have billions of parameters, the numerical values derived from training data, and run across thousands of computer chips. To keep up, companies have responded by adding more hardware, more chips, more memory and more powerful networks. This brute force approach has helped AI make big leaps, but it’s also created a new challenge: Data centres are becoming energy-hungry giants.
Some tech companies are responding by looking to power data centres on their own with fossil fuel and nuclear power plants. AI energy demand has also spurred efforts to make more efficient computer chips.
I’m a computer engineer and a professor at Georgia Tech who specialises in high-performance computing. I see another path to curbing AI’s energy appetite: Make data centres more resource-aware and efficient.
Energy and heat
Modern AI data centres can use as much electricity as a small city. And it’s not just the computing that eats up power. Memory and cooling systems are major contributors, too. As AI models grow, they need more storage and faster access to data, which generates more heat. Also, as the chips become more powerful, removing heat becomes a central challenge.
Cooling isn’t just a technical detail; it’s a major part of the energy bill. Traditional cooling is done with specialized air conditioning systems that remove heat from server racks. New methods like liquid cooling are helping, but they also require careful planning and water management. Without smarter solutions, the energy requirements and costs of AI could become unsustainable.
Even with all this advanced equipment, many data centres aren’t running efficiently. That’s because different parts of the system don’t always talk to each other. For example, scheduling software might not know that a chip is overheating or that a network connection is clogged. As a result, some servers sit idle while others struggle to keep up. This lack of coordination can lead to wasted energy and underused resources.
A smarter way forward
Addressing this challenge requires rethinking how to design and manage the systems that support AI. That means moving away from brute-force scaling and toward smarter, more specialised infrastructure.
Here are three key ideas:
Address variability in hardware. Not all chips are the same. Even within the same generation, chips vary in how fast they operate and how much heat they can tolerate, leading to heterogeneity in both performance and energy efficiency. Computer systems in data centres should recognise differences among chips in performance, heat tolerance and energy use, and adjust accordingly.
Adapt to changing conditions. AI workloads vary over time. For instance, thermal hotspots on chips can trigger the chips to slow down, fluctuating grid supply can cap the peak power that centres can draw, and bursts of data between chips can create congestion in the network that connects them. Systems should be designed to respond in real time to things like temperature, power availability and data traffic.
Break down silos. Engineers who design chips, software and data centres should work together. When these teams collaborate, they can find new ways to save energy and improve performance. To that end, my colleagues, students and I at Georgia Tech’s AI Makerspace, a high-performance AI data centre, are exploring these challenges hands-on. We’re working across disciplines, from hardware to software to energy systems, to build and test AI systems that are efficient, scalable and sustainable.
Scaling with intelligence
AI has the potential to transform science, medicine, education and more, but risks hitting limits on performance, energy and cost. The future of AI depends not only on better models, but also on better infrastructure.
To keep AI growing in a way that benefits society, I believe it’s important to shift from scaling by force to scaling with intelligence.
- is an Assistant Professor of Computer Engineering, Georgia Institute of Technology
- This article first appeared in The Conversation
