The Future of AI: Energy Limits

 By Javier Surasky-

The recent Summit of the Future has made me think a lot about the concept of "future." The future is a rearrangement of present opportunities. Viewed this way, the future is inscribed in the now and is not its continuity but rather one of its multiple possible realizations.

With this vision in mind, a recent conversation between Marc Benioff, CEO and co-founder of Salesforce, and Jensen Huang, Founder and CEO of NVIDIA, caught my attention. The meeting took place during the "Dream Force" event, organized in September 2024 by Salesforce.

In this public conversation, Huang recalled that his company's first product was Gforce, which made it possible for the Compute Unified Device Architecture (CUDA) to be born, which in turn helped the emergence of AI, making Agentforce possible. The last step of that chain was later explained, almost inadvertently, when Huang said that in his company, they were "excited about the possibility of using deep learning in so many different areas, from computer vision to speech and understanding, etc. When that happens, the question is: What new opportunities will open up for the computer industry? And for the first time, our industry is going to be a skills industry. We captured that idea and talked about 'agents.' But, for the first time, we'll have (digital) agents using (digital) tools."

For Huang, this is an extraordinary historical moment where technological progress has surpassed Moore's Law and squared it. Moore's Law describes that computational density doubles every 18-24 months, but this is already extremely slow if we look at the changes and their speed over the last decade.

On one hand, between 1959 and 2010, global computing power doubled on average every 17 to 29 months. If that was already impressive, from 2010 onwards, the doubling of total computing power began to occur in periods of four to nine months.

This growth implies an increase in the number of chips and is accompanied by growth in their performance while computing capacity costs fall rapidly. As early as 2005, Ray Kurzweil pointed out in his book "The Singularity Is Near" that computers would reach the level of human intelligence by 2029, something he has just reaffirmed in the recent sequel to that work, "The Singularity Is Nearer," published in 2024. The value of computing power for this, he tells us, will be around USD 1,000 by 2029.

According to work by Advait Madhavan, published by the U.S. National Institute of Standards and Technology, the human brain operates with a capacity equivalent to an exaflop (a 1 followed by 18 zeros) of mathematical operations per second. FLOP is the acronym for floating-point operations per second, a mode of mathematical notation.

Well, the human brain's processing capacity has already been reached by Frontier, the most powerful supercomputer that exists today. The difference between the human brain and AI in computing capacity is currently sustained by unequal energy consumption: the human brain requires 20 watts to perform the process compared to 20 megawatts consumed by Frontier, which is a million times more consumption for the computer.

There's more: NVIDIA and Amazon Web Services (AWS) are working on the Ceiba project, a cloud-based supercomputer that will be able to produce 414 exaflops, which means that in one day, it could perform the same number of operations as an average computer from 2010 would in 11 million years.

Given that Kurzweil's prediction is aligned with reality, it's unsurprising that in the chat with Benioff, NVIDIA's CEO stated that we are about three years away from having robotic hardware that can match humans, and his company is working on it. Again, the problem is primarily related to energy efficiency.

Everything indicates, then, that the challenge of energy generation is above that of developing computing capabilities, whether it's about having an AI with human-like capacity or even a general AI or having general-purpose humanoid robots.

A question that will define the future is: can agents find the energy solutions that remove the main obstacle to their evolution? If this happens, the future will be very different: work can no longer be a central social articulator, technologies and skills will measure wealth, and savings or leasing plans will not be oriented towards buying cars.

The environmental limits of the natural world leap onto the AI scene, whose forces are already unleashed, and make us think that the real fear we should have is not the irruption of "Terminator" but the senselessness of our own greed when it comes up against planetary limits.