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.

  • pipes@sh.itjust.worksEnglish
    3·
    10 hours ago

    Keep using the Superflower my friend, and keep the Pico + Dell transformer as backup if the first fails. Maybe in a year or two you’ll find a great deal on a mobo+cpu combo that’s way more efficient and powerful anyway so all investments made now for a few watts will seem moot by then. Just my 2c.

    Btw I also have an old Superflower but only 350W, and I recently got a used (barely) Seasonic Focus 550W in case I needed more wattage again (for multiple HDDs spinning up at boot or in case I bought a GPU again), also gold-rated. I was looking to get a Titanium or Platinum one but the price difference was still quite unjustifiable for my use case (idle server/NAS).

    Another thing, I never bothered testing with a wattmeter (except the one on the UPS display) because I read that they’re a lot less accurate at the low wattages that we are discussing. Also the UPS alone causes some losses as well.