I had a 2015 Macbook Pro, impossible to upgrade, I've never found a use for it. Until Hermes.
I've put a Debian into it, now I have 8 core and 16Go tu run a dozens of Hermes agent.
Recycle your material ! Consumption seems to be only between 6W and 15W
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Holy shit. I have one of those at home. Recently put Omarchy on it but your use case seems a lot more useful.
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In fact I hesitated a lot between Debian and Omarchy, but final decision was I want a fully autonomous system, so I choose to try going without GUI. Hermes have a dashboard, and Claude and Codex are able to act throught Tailscale by SSH. It's super easy to maintain and secure