Researchers are turning old Pixel phones into a data center - and they outperform some server hardware

Key Points:

• Researchers at the University of California San Diego, in collaboration with Google, are repurposing retired Pixel smartphones into low-cost data centers to reduce electronic waste and lower the embodied carbon footprint associated with device manufacturing.
• Older smartphones, around three years old, can outperform certain server cores on a single-core basis, and clusters of 25 to 50 phones can match the compute output of a dual-socket server CPU, making them viable for distributed workloads.
• The phones are stripped down to essential components and run a Linux-based software stack compatible with orchestration tools like Kubernetes, enabling them to function as independent compute nodes in a cluster.
• A prototype cluster of 20 phones is already supporting applications for over 75 students, with plans to scale up to 2,000 phones to serve hundreds of classes simultaneously, testing the durability of consumer hardware under data center conditions.
• While not suitable for large hyperscale data centers due to management complexity, this approach offers cost-effective, sustainable computing options for universities and smaller organizations that can leverage distributed workloads without requiring cutting-edge hardware.