a16z launches $1.1 billion Machine Age Fund to back AI hardware, data centers and power systems
Andreessen Horowitz, better known as a16z, said it has raised $1.1 billion for a new Machine Age Fund focused on AI hardware and physical infrastructure. The firm is shifting attention away from the software-heavy AI trade that dominated recent years and toward the lower layers of the stack, including chips, memory, networking, storage, data centers, robotics, home AI devices and the power systems required to run them. a16z argued that the constraint on the next phase of AI is no longer just access to more GPUs. As AI moves from chatbots into reasoning, coding and other knowledge work, token consumption and compute demand per task are rising sharply. The firm said that change is pushing up demand for compute, memory and network capacity while exposing limits in electricity supply and hardware manufacturing. Using NVIDIA’s roadmap as an example, a16z said rack-level compute density has increased about 28x from the H100 generation to Rubin systems. It also pointed to rising rack power draw, from roughly 5 to 10 kW in traditional data centers to 100 to 250 kW for AI systems today, with a projection of 1 MW per rack within three years. The firm added that some AI facilities are moving from tens of megawatts to hundreds of megawatts, and in some cases toward gigawatt-scale campuses.








