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submitted 14 hours ago by [email protected] to c/[email protected]
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[-] [email protected] 24 points 2 hours ago* (last edited 2 hours ago)

Power consumption is a massive reason to really not do that. Its cheap for a reason, its takes a shitload of power to be shit and you will pay more in energy than you save in hardware unless its only powered on for short periods of time - a server typically isn't.

This is actually something that applies to cheap products too. Was in Asda a little while ago and saw 2 LED bulbs with the same lumen rating. Cheaper one used 3w more and you only saved £1. Running it for 8 hours a day for a year would cost double that saving in electricity. For a server you are looking at almost £2 per watt each year. Does that ewaste look so good to you now?

Some things are absolutely worth getting second hand, but you really should be careful considering the power cost as well.

Quick edit: If you don't need it running 24/7, consider something like AWS too. I love selfhosting but if its not running much it might be cheaper to not bother buying hardware.

[-] [email protected] 4 points 1 hour ago

I'm not taking electronics advice from someone who uses the term lappies.

[-] [email protected] 1 points 1 hour ago

There's lots of ways to make existing hardware more efficient at the cost of performance. Under-volting the CPU and RAM (or just putting them in "efficiency" mode) can probably save more electricity than you lose in generational improvements. Considering how much more powerful PCs are compared to SBCs, you'd probably still have better performance than an SBC. Also, a more powerful CPU that takes double the power but as a result can idle for more than 50% of the time would be more efficient than a less powerful CPU never idling.

There's a lot of other variables (like idle power draw, efficiency at various power levels, idle latency, etc), but in general I think your statement would be inaccurate at least 60% of the time.

[-] [email protected] 5 points 2 hours ago* (last edited 2 hours ago)

And for some (including me) that's our only computer (other than phone). I just can't afford anything, so all I have is a shitty laptop from 2010 that barely plays 1080p video. I deeply want something better, especially a steam deck, but doesn't look like that'll happen anytime soon (or ever). And then you see people have steam decks that just sit there, unused, gathering dust.... fuck.

[-] [email protected] 3 points 2 hours ago

You want a steam deck to replace your only computer?

[-] [email protected] 6 points 2 hours ago

Why not? especially when it's a laptop from 2010

[-] [email protected] 3 points 2 hours ago

The day i can fit the power of a computer capable of emulating the switch 1 in a gameboy shell will be glorious.

[-] [email protected] 2 points 1 hour ago

You probably could with a phone

[-] [email protected] 2 points 1 hour ago

We must be pretty close on that by now, I can emulate a number of Switch 1 games surprisingly OK (not amazing, just OK) on my S21!

[-] [email protected] 6 points 3 hours ago* (last edited 3 hours ago)

I dislike posts like this. Technology moves quickly. PIs are great for hobby electronics where you need a little computer. Want a cheap computer to run a few things 24/7 and know what you're doing? Pi it is. You don't need to run containers on a pi because you have the skills to install the dependencies manually. They cost pennies to run 24/7.

I think of pis as beefed-up calculators. I have made lots of money using a pi zero running code I needed to run 24/7. Code I developed myself.

Having an old laptop with outdated parts taking up lots of space, weighing a lot, and having components like fans, keyboard, and mousepad most-likely soon dying and needing replacing is an additional concern you don't want.

Someone below saying use an old laptop if you're living with parents and don't pay the electricity bill is a bit lame. Do your part for the world. Someone will be paying for it.

Ultimately, use what you want but if you're just starting with servers, use a virtual machine on your computer and log in to it. You can dick about with it as much as you want, and reset back to a working state in seconds.

[-] [email protected] 5 points 2 hours ago

Yeah, theres a lot of old old laptops which make no sense to run. But there's a growing crop of more recent used devices that are only being sold off because they don't support Windows 11, and the power efficiency story changes there. The OOP mentions "8.1 lappies"; my main laptop has a 15W 8th gen which is only in the last year starting to feel less appropriate for desktop use. (And honestly, a RAM and storage bump will probably get me another couple years.)

For environmental concerns, youve got to tax new devices with manufacturing costs as well.

100% agree about VMs though.

[-] [email protected] 3 points 3 hours ago

I think this really depends on the model they're eyeballing because the Pi5 is frankly ridiculous for the price and has absurd power requirements (5V5A USB?). I wouldn't recommend one of these unless you have a specific need like a certain hat or the GPIO pins. You can get a Dell micro Optiplex for less money and have a full fledged i5 or i7 processor with similar power usage.

Plus the RPi Foundation exposed themselves as the greedy bastards they are during COVID which is yet another reason to turn your back on them.

For something like a Pi Zero, maybe go for it, but there are similar devices out there from other companies too.

[-] [email protected] 1 points 2 hours ago

Rockchip boards are way more efficient than Pis

[-] [email protected] 3 points 3 hours ago

Some are talking about power consumption in this thread and I've had similar ideas. Gone are the days where I can run a beefy spec'd desktop in good conscience, it's just such a resource hog. I have a laptop that stays in hibernate mostly. My other idea for a low power consumption home computer was to get a Le Potato single board and pair that with an e-ink monitor (there's some really nice ones out there) which I think was sitting at maaaaybe ~5kwh. I think the more we can limit our power consumption, the better, all that electricty directy translates into coal being burned and additional CO2 being created. I'm no luddite, but it has impacted how I consume media which is now very mindful of the impact watching a few episodes/playing a couple hours of games versus just one or two hours of content on any given day.

[-] [email protected] 10 points 5 hours ago* (last edited 2 hours ago)

Or get a used thin client (e. g. HP T620, T630, T640 or Dell Wyse 5070). Cost: ~40-100$. Biggest advantage: Passive cooling, i. e. they're absolutely quiet.

[-] [email protected] 16 points 6 hours ago* (last edited 6 hours ago)

I mostly agree, and did the same with my second gen lab build - instead of shiny new NUCs like I had used round 1, I bought old off lease Dell Xeon boxes. SO MANY PROS -

  • Got them up to 14c/28t each
  • They can take GPUs and actually do heavy transcoding/ML work
  • They can take up to like, 128GB of memory, which is GREAT when they're all hypervisors

The downsides can't be denied though -

  • Even without the GPUs and beefed up CPUs, they are power hogs - the CPU alone uses more than an ENTIRE NUC
  • They run HOT
  • They run LOUD

The same holds true for off-lease SFF stuff, Lenovo and the likes ...

So while reuse/repurpose is absolutely of the utmost importance, no question - when it comes to technology and how quickly it advances and miniaturizes, a thorough and logical pros/cons list is often required.

I'd add another option though - if you do need what a Pi brings to the table - do you really need a shiny new Pi 5? Is it possible a used Pi 3 or Pi 4 would do the trick, and check the reuse box?

[-] [email protected] 1 points 57 minutes ago

The power aspect is a lot bigger of a factor than I would have thought. I had an old computer I was going to use as a server for Foundry that I could keep up all the time, but when I measured its wattage and did the math, it would cost me $20 a month to keep on. A pi costs like $2 to keep running, so it paid for itself pretty quick

[-] [email protected] 2 points 4 hours ago

I now have a stack of Thinkpads laying around. Right next to my two RPis 😂

[-] [email protected] 1 points 2 hours ago

I really should pick up another used thinkpad.... I've got one for my wife, one for me for work, and I would really like to have a personal in the mix to make my life easier.

[-] [email protected] 5 points 6 hours ago* (last edited 6 hours ago)

Add use of gpio to reasons to use pie.

While gpio adaptors are available for pc. The software architecture is not as well rounded and documented.

So for any complex hardware project development. Gpio based SBCs are often essential.

So space, low power and gpio development.

Otherwise yep old laptop or even desktop can be cheaper and more able.

But overall. The wide software support and documentation for hardware connectivity is a bloody good reason to keep pie supported.

I'm setting 2 up to control the hot water and solar dump system on my shared little boat. As I want to link 12v Lifepo4 batt charging with the solar dump and visually impaired control for AC and diesel heating of the water.

Pies really are the best option to play with. While low power and easy to design a unique low vision interface.

[-] [email protected] 2 points 2 hours ago

I bet you could instead use an ESP32 for GPIO and just connect it remotely to whatever Pi alternative you use (if needed at all). Turning some switches on and off while monitoring input values doesn't sound very computationally intensive.

[-] [email protected] 1 points 1 hour ago

Yep that can work. But ignores all the well documented and supported development community comments I pointed to while also indicating other options exist.

As for.

Turning some switches on and off while monitoring input values doesn’t sound very computationally intensive.

You realise IO wise that describes your keyboard and mouse interaction on the most powerful gaming PCs.

It's what you do with the results that matters.

GPIO supports a fair bit more then the on and off input and output. It's slow compared to other systems. But has multiple serial protocols of differing types. Simple GUI displays can also be run via gpio connections. Low Res Lidar devices are available connected via the spi connections with all the data processed on that host PC.

So no gpio use can require all levels of processing power post connection. It is after all designed for experimentation and prototyping.

For my project. You clost to correct. I just use a simple GUI displays with xorg. So a pie 0 is plenty. And way lower power then the other options. It links to a pwm controller to power 2 12v 200w water tank heaters a relay for a 750w AC heater. Bluetooth connection to a BMS and solar MPPT. While operating multiple temp sensors measuring at different levels. And warning of legionaries risk. If the tank has not been over 65c in 14 days (actually 10 days but I'm over careful given the health status of my brother and I).

So much less then the tiny Pie 0 would not be able to cope but mainly due to the need for the vision impaired interface. Speaking functions dose not take much. But doing so without being unusably slow is about the limit of a pie 0.

[-] [email protected] 1 points 38 minutes ago

Any photos of the boat and setup?

[-] [email protected] 2 points 4 hours ago

Depending on the specs, I might be paying more for those, even used, than a SBC. The joys of Brazilian tech markets...

[-] [email protected] 22 points 9 hours ago

The only caveat here is the fire-hazard non-removable lithium batteries.

[-] [email protected] 1 points 3 hours ago

Not simple to remove. They can all be taken out.

But the fire risk is a very valid point. All laptops should indicate they should not be left alone when charging. While many do. Setting one up in a unobserved location to run permanently should be batteryless or Lifepo4 adapted. So laptops may not be best suited to this environment. A used thin client or other DC input option may be much easier. Or an old desktop if batts and not wanted.

[-] [email protected] 16 points 8 hours ago

This is, in my mind, one of the benefits of laptops over micro computers: integrated UPS. Even an old, degraded battery will probably get you a couple of hours with the screen off.

IME, power consumption is going to be worse overall, for any laptop likely to be in the recycle bin, it's probably double the consumption of an ARM SBC. The integrated UPS and usually decent power conditioning of the power supply saves you more money with a laptop. Plus, keyboard and screen for emergencies - I just generally expect that, over there life of a micro I'm going to have to drag out and plug in a spare keyboard, mouse, and monitor because something in a device, or an upgrade, or BIOS flash, is preventing a boot.

There are a lot of good reasons to use laptops instead of SBCs, if you don't mind the extra power draw and (as she says) don't have size requirements.

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[-] [email protected] 17 points 9 hours ago

Low power and arm architecture are big differentiators between Pi and laptops.

I totally agree recycle laptops where possible, but they're generally noisier and less energy efficient plus the battery degrades over time and is a fire risk.

They're not necessairly a good fit for always-on server or service type uses comparef to a small board like Raspberry Pi. But a cheap or free second hand laptop is definitely good for tweaking, testing and trying our projects.

[-] [email protected] 3 points 6 hours ago* (last edited 6 hours ago)

Right? I made the realization a while ago that refurbished mini PCs are a way better fit for most of my homelab needs.

Sure, if power consumption is your #1 priority then you'd want some ARM solution. But for my use cases, I've found myself fighting with software support and the relatively low computational power of even the newer RPis.

Also, T-series Intel chips (the low power ones) have pretty good idle power consumption and don't spin up the fan too much given their lower power. And a lot of uses cases require sticking a fan and heat sinks on an RPi so you lose the quietness benefit.

Also also, you (still?) need proprietary blobs to use a bunch of the hardware on RPis. You can go full open source on a regular old PC.

[-] [email protected] 50 points 11 hours ago

Where are these cheap e waste laptops with gpio and actually low power?

[-] [email protected] 1 points 2 hours ago

The market is about to be flooded with them with Windows 10 going EoL in October.

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this post was submitted on 14 Jun 2025
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