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Budget efficient Home Server ATX PSU (piefed.social)

submitted 12 hours ago by bjoerns@piefed.social to c/selfhosted@lemmy.world

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Hi everyone,
for 20 years now i run servers in my own home to host my stuff. Because i am living in europe with quite high price tags for electricity i am always searching for ways to make my servers more power efficient.

But finding a power efficient ATX PSU with performes well in ranges around 20-25W, where my server idles most of the time, is quite challenging.

Dont get me wrong, the Server has an very efficient PSU, a Super-Flower SF450P14XE Golden Green Pro but thats now 14 years old (but serves me well). I bought it for 55€ back in the days.
Over the years i tried various budget insider tips regarding efficent PSU's (for example the Cooler Master MWE400) which all were also good but not better than the 14 year old Super Flower, which i think is kind of sad.

Just yesterday i tried a 160W PicoPSU combined with a 150W DELL DA-1 powerbrick (which should also be quite efficient), but it was the same. My Server used 1-3W more than with the Super-Flower.

Long story short: are there any efficient PSU out there that you can recommend for loads around 20-25W, that dont have a price tag like a kidney on the blackmarket?

I also have seen people trying to mod old Dell Server PSU with are 750W with platinum rating an are cheap on ebay, but thats another story.

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[–] Onomatopoeia@lemmy.cafe 1 points 5 hours ago

I have an older (2017) Dell SFF OptiPlex 7050 that idles about 12w, with 3 drives (each 1 TB, spinning disk).

It peaks about 80w when I'm doing conversions, but I can keep that down by limiting cpu usage for handbrake (it doesn't convert faster above 4 cores anyway, just uses more power).

I was surprised by the low idle power, I would've been happy with upwards of 40w since my previous machine idled at 100w.

So I think very low idle is possible, I'm just not sure why this box idles so low.