Don’t even try to pick based on performance. Whatever they did in the last year, or 5, or 10 is mostly irrelevant to what they do in the next 30. You’re betting on the economy, not on a stock picker.

Beyond that, it kind of depends on why you want an ‘SRI’ fund. If you just want someone to tell you your investments don’t make you a bad person, then pick a fund from a large brokerage with low maintenance fees, ideally in the range of 0.1%/year. If you want an SRI because you think the market is going to reward ethical companies or punish unethical companies, or because you’'re willing to sacrifice long-term performance for not actively exploiting externalities, then you need to dig into the funds a little deeper and find out what they mean by ‘social responsibility.’ It’s a hot marketing phrase right now, with no regulatory meaning, so you can be sure that there are products being called ‘socially responsible’ with little or no difference from products not so labeled.

If you actually have a specific ethical agenda, then you need to be prepared to do a lot of work. You’ll need to understand how the fund defines SRI, find out what benchmarks they use to greenlight companies, and figure out whether those benchmarks can be greenwashed. Can Exxon donate a few million dollars to a sketchy ‘reforestation charity’ and claim to be carbon-neutral? I imagine this research is out there, but the people interested in Wall Street tend to be a different set than those interested in climate, labor rights, or political freedom.

You can only spin drives down if they’re idle. If you have a service that touches it - say, homeassistant logging data, tvheadend updating EPG - then they’re going to keep spinning.

I switched from an I3-530, nominal TDP 73W, to an N-100, nominal TDP 7W, and power from the wall didn’t change at all. Even the i3 ran around 0.1 CPU load, except when transcoding, and I’m left with the impression that most of the power goes into HDDs, RAM, maybe fans, and PS losses. My sense is that the best way to decrease homelab power use is to minimize the number of devices. Start with your seyrver at 60W, add a WAP at 10-15W, maybe a switch at 10-15W… Not because of the CPUs, necessarily, but because every CPU every CPU comes with systems to keep the CPU going, keep the power regulated, etc.