this post was submitted on 05 Feb 2025
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Got myself some energy monitoring Zigbee plugs and made an interesting discovery (sh.itjust.works)
submitted 4 months ago* (last edited 4 months ago) by lka1988@sh.itjust.works to c/selfhosted@lemmy.world
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I'm in the process of getting my Home Assistant environment up and running, and decided to run a test: it turns out that my gaming PC (custom 5800X3D/7900XTX build) uses more power just sitting idle, than both of my storage freezers combined.

Background: In addition to some other things, I bought two "Eightree" brand Zigbee-compatible plugs to see how they fare. One is monitoring the power usage of both freezers on a power strip (don't worry, it's a heavy duty strip meant for this), and the other is measuring the usage of my entire desktop setup (including monitors and the HA server itself, a Lenovo M710q).

After monitoring these for a couple days, I decided that I will shut off my PC unless I'm actively using it. It's not a server, but it does have WOL capability, so if I absolutely need to get into it remotely, it won't be an issue.

Pretty fascinating stuff, and now my wife is completely on board as well; she wants to put a plug on her iMac to see what it draws, as she uses it to hold her cross-stitch files and other things.

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[–] Strit@lemmy.linuxuserspace.show 4 points 4 months ago (2 children)

I also found out something interesting. My desktop uses about 1/3 of the power one of my freezers do. :)

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[–] AliSaket@mander.xyz 4 points 4 months ago (1 children)

Yeah I made a similar discovery after installing a Shelly Switch with Power Metering. The monitors and their brightness make a huge difference as well when in or near idle (for photography, so not a surprise). I've also implemented an "anti-standby" function, so the switch opens whenever the current falls under a specific threshold.

For the WoL, since I have a switch, I configured my BIOS so it would turn on after power loss. Now I can start to boot up from afar :)

[–] lka1988@sh.itjust.works 2 points 4 months ago

That's certainly one way to do it...

[–] Codilingus@sh.itjust.works 3 points 4 months ago (1 children)

It will help some, and will also help temps, but AMD hardware does well with undervolting, especially the 5800X3D. I undervolt mine, and read the consensus that - 30 across all cores should be achievable for anyone, unless they're really, really unlucky. My 6800 XT I also only run @ 92% Voltage, and it runs cooler and faster now, too.

[–] lka1988@sh.itjust.works 2 points 4 months ago (1 children)

Definitely gonna check that out.

[–] Codilingus@sh.itjust.works 3 points 4 months ago

The CPU was done in BIOS on an ASUS x570. For me it was under AI Tweaker > Precision Boost Override > Curve Optimizer.

The GPU was done in the driver software on Windows. Or LACT if on Linux.

[–] Windex007@lemmy.world 3 points 4 months ago (5 children)

I had a similar revelation. Home assistant has a WOL component, so you can set that up for easy starts. I've had mixed success with mechanisms to get HA to sleep the computer, though.

Ideally I want the machine to be sleeping I'd I'm not using it.

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[–] ryannathans@aussie.zone 3 points 4 months ago (2 children)

Do you have a link to the plugs? I want to try the same

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[–] sploosh@lemmy.world 2 points 4 months ago

I recently bought a Mac Mini because music production on Linux had me fighting my tools more than using them. My Linux box is a 7800x3d/7800xtx. The Mini idles at 4w, while the 78000xtx alone idles closer to 50w. I use the mini for everything non-gaming now.

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