Earlier quoted context omitted.
Replacing really obsolete machines used as servers by RPI does certainly makes sense power-wise (as long as you don't need storage), so not arguing with the point you make about that. However, I agree with with the OP comment that computer should not be replaced simply because newer, more energy efficient alternatives exist: at least not for anything made after 2010. When comparing whether it is worse it or not to ex…
> Replacing really obsolete machines used as servers by RPI does certainly makes sense power-wise (as long as you don't need storage) You do need storage, but you need it for all of them anyways. I certainly won't trust the original spinning disk HDD that comes with hand me down machines with anything more than an OS image. Everything else goes on the NAS. > However, I agree with with the OP comment that computer sho…
> It still makes sense to use a decade-old computer. >> I don't really think it does, at least not some of them.
I totally agree with you regarding the homelab topic (although personally, I started using low-powered refurbished x64 thin-clients (using about 10W) in place of a RPI cluster, mainly to get real sata ports on them.)
My point is that, environmentally, continuing to use a 10y computer rather than buying a new one is generally a sound advice (assuming it does still what you want it to do).
Since I didn't have data for a 10y old computer, I used what I could find: the 2016 vs the 2021 Macbooks Lifecycle assessments from Apple. The same point would probably stand between a 2010 computer and a 2023 computer. Even if the old one is less energy efficient, the 150 to 300kg+ of CO2 you save not building a new device goes a long way.
And instead of consumer devices or RPi, if you are talking about datacenter-class servers, then you save even more CO2 by prolonging your device life since a new server's manufacturing footprint is more like 1500 - 3000 kg CO2eq.