The major takeaways of this work are:

(1) For specific workloads, clusters of repurposed phones are cheaper and more carbon efficient than traditional servers.

(2) More broadly, scavenging unwanted equipment shows excellent potential for building economic and carbon-efficient systems, especially when renewable energy is plentiful.

(3) Sustainability has operational and manufacturing facets; manufacturing dominates as operating trends towards zero with cleaner energy mixes.

(4) Accurate LCA information is essential for carbon-based analyses; it would be beneficial if more ICT manufacturers published this information, including cloud providers who build custom systems. Our work highlights the need for more holistic analyses of the environmental impact of computing. With the substantial carbon cost of manufacturing and the difficulties of responsible recycling, the energy efficiency of a device may be the least significant component of its environmental and human impact.

  • socphoenix@midwest.social
    3·
    26 days ago

    That is incredibly unfortunate, as I don’t exactly want a bunch of plugged in 24/7 lithium batteries sitting around. I’d rather take the extra time to take them to the recycler than risk missing a spicy pillow.

    • DeltaTangoLima@reddrefuge.comEnglish
      4·
      26 days ago

      I use Home Assistant, and install that on all my old, re-purposed smartphones (usually as cheap CCTV). Each phone is plugged into a smart power socket.

      I then use automation to turn a phone’s charger off when it hits 80%, then back on when it reaches 50%. No overcharging, no overheating, and actually helps keep the batteries in good shape.

          • Moonrise2473@feddit.it
            21·
            25 days ago

            Because I assume that iOS devices become e-waste a few years after discontinuation, unless you write custom software on some outdated xcode+MacOS combo