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Reducing power consumption of a desktop PC

⁨55⁩ ⁨likes⁩

Submitted ⁨⁨3⁩ ⁨days⁩ ago⁩ by ⁨KernelPanic@programming.dev⁩ to ⁨selfhosted@lemmy.world⁩

https://aa55.dev/2025/10/21/Desktop-low-power.html

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Comments

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  • mlfh@lemmy.sdf.org ⁨3⁩ ⁨days⁩ ago

    First time I’ve ever seen this, and I love it.

    Image

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    • KernelPanic@programming.dev ⁨3⁩ ⁨days⁩ ago

      I began blocking chrome after google started imposing restrictions on android app installations.

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      • undefinedTruth@lemmy.zip ⁨3⁩ ⁨days⁩ ago

        You are not blocking just Chrome though. You are also blocking Vanadium on GrapheneOS.

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      • Ooops@feddit.org ⁨3⁩ ⁨days⁩ ago

        I was about to ask how to get that error after checking with a non-firefox-based backup-browser…

        But people stupid enough to still run chrome don’t deserve better.

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    • Joelk111@lemmy.world ⁨3⁩ ⁨days⁩ ago

      That’s hilarious

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    • pHr34kY@lemmy.world ⁨3⁩ ⁨days⁩ ago

      That’s amazing. I’ll have to take your word for it. I only have Firefox on my devices.

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  • Sir_Kevin@lemmy.dbzer0.com ⁨3⁩ ⁨days⁩ ago

    Something that I’d like to point out that a lot of people seem to miss, is that power saving is not always about saving money.

    I live off-grid, so for me it’s about not draining my battery bank, which is a precious and limited resource. It can make the difference between getting by on solar power or having to run a generator to recoup the losses.

    Running a generator uses fuel (another limited resource), it’s loud, and produces heat and exhaust. It’s the last thing I ever want to do if I can avoid it. Depending on the time and location it may not even be an option.

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  • tomkatt@lemmy.world ⁨3⁩ ⁨days⁩ ago

    Neat write up.

    Power consumption is a big reason I ditched my full size server for an AMD mini-PC. Way more efficient with a tdp of 25w, and idles pretty low (sub-10w).

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    • ag10n@lemmy.world ⁨3⁩ ⁨days⁩ ago

      Same, picked up an Asrock x300 and running a 4750g at 35w Perfect for anything the house needs, and use the gaming pc for testing and prototyping

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  • BlameThePeacock@lemmy.ca ⁨3⁩ ⁨days⁩ ago

    The simple answer is most desktop PCs will not come even close to that at idle. Even just having a few case fans may draw more than that, without involving the CPU at all.

    Laptop devices can do that in some cases with their extra power management features.

    That being said, do the math to see if it matters. The difference between 10w and 40w is 0.7kwh per day, at least where I live that’s about 7 cents or about $25 per year.

    In my case it would be more expensive to purchase a dedicated low power device than it will save me in 4-5 years compared to just using something I already have laying around.

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    • Onomatopoeia@lemmy.cafe ⁨3⁩ ⁨days⁩ ago

      I just added a case fan to my SFF. I went with a compressor style given the space constraints and restrictions (they tend to draw more current because of the load).

      It increased draw by <1 watt - it barely registers on the meter.

      I don’t think fans really make much difference. My 120mm compressor is 4w on the label (which is peak load, like startup). It probably drops back to 1/2 W after startup. And that’s a huge fan in a compressor style, equivalent to a 200mm+ in a conventional fan.

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    • J52@lemmy.nz ⁨3⁩ ⁨days⁩ ago

      I pay 5x as much. Where do you get 1kwh for 10c?

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      • Tm12@lemmy.ca ⁨3⁩ ⁨days⁩ ago

        Canada at around $0.15 USD per kwh

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      • BlameThePeacock@lemmy.ca ⁨3⁩ ⁨days⁩ ago

        British Columbia

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  • meldrik@lemmy.wtf ⁨3⁩ ⁨days⁩ ago

    Most of that power consumption is coming from the GPU.

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  • pHr34kY@lemmy.world ⁨3⁩ ⁨days⁩ ago

    What’s crazy is that my small UPS consumes 20W at idle (fully charged; AC connected).

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  • hendrik@palaver.p3x.de ⁨3⁩ ⁨days⁩ ago

    I’m a bit below 20W. But I custom-built the computer a long time ago with an energy-efficient mainboard and a PicoPSU. I think other options for people who don’t need a lot of harddisks or a graphics card include old laptops or Mini-PCs. Those should idle ad somewhat like 10-15W. It stretches the definitiin of “desktop pc” a bit, but I guess you could place them on a desk as well 😉

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    • paequ2@lemmy.today ⁨3⁩ ⁨days⁩ ago

      energy-efficient mainboard

      How did you go about selecting one of these?

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  • dataprolet@discuss.tchncs.de ⁨3⁩ ⁨days⁩ ago

    The idle power consumption might be high but it’s probably still more viable than buying an entirely new PC.

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  • paequ2@lemmy.today ⁨3⁩ ⁨days⁩ ago

    Nice! Just what I was looking for! My old server would idle at 60W (with 4 HDD). My new server seems to be idling at around 45W. I haven’t looked into any tweaks I could make yet. This will be a good starting point.

    *where “idle” means it’s running a bunch of Docker containers, but they’re not being actively used.

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  • Jozav@lemmy.world [bot] ⁨3⁩ ⁨days⁩ ago

    interesting information! Did you try removing the rx7700xt ?

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