Questions tagged [energy]

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prevent windows 10 from going to sleep while no user is logged in

I installed windows 10 LTSC on a desktop to use it as a server. The plan is to use the server for a project that needs a fiberoptics connection, so the server would be at a remote location. Now what I ...
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Server power requirements

The computers that I’ve been exposed to only require a typical American 120 volt outlet to the PSU. From what I understand, depending on the homes electrical layout you’re limited to about 15 amps, ...
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646 views

Prevent Windows 10 from going to sleep on lock screen

How can I prevent Windows 10 from going to sleep on the lock screen? I want the screen to stay on forever on the lock screen without moving the mouse. This would be easy to achieve if I was signed in ...
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External HDD Spins Down Every 30 secs - Can't find a solution to stop this from happening

My Seagate Expansion Desktop External HDD keeps spinning down after just 30 secs of inactivity. First off I know there are already a lot of posts on how to stop this from happening and believe me I ...
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2 answers
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How do I resolve the powercfg energy report errors and warnings?

Ran the following command from an elevated command prompt: C:> powercfg /energy /output "c:\energy.html" The energy report has an error from Realtek and a bunch of warnings. Are all of ...
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2 answers
448 views

Power of NVIDIA GPU out of limits (Nvidia A100)

I am executing a CUDA kernel in my A100 GPU and I've realized that the power consumption at some points is higher than nvidia-smi given range: The picture has been taken from nvtop. Is it something ...
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2 answers
116 views

Power consumption of Ram and Hard disk

I need to measure the power consumption of the ram and hard disk. Is there any way to measure the voltage and Ampere usage of a Hard-drive, while reading a file?
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Windows 8 - Missing 'Balanced' Power Plan

I've seen a similar (although not the same) question here Default Power Plan options apart from Balanced have disappeared, how to restore them? but I did not understand what to do. Basically, when I ...
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6 answers
164 views

Power consumption of online services

Bit of an odd question maybe, but I am considering setting up a server at home and I want to host a couple of websites, a nextcloud, and a plex server. My websites are pretty simple and this way I'll ...
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1 vote
1 answer
77 views

Monitoring my computer's energy's usage - is it too low?

My desktop computer is an i3-2100 with 1 DVD drive, 2 HDDs and 2 SSDs connected to it, as well as a CPU fan and a case fan. All of this is connected to my PC via extension cord (i.e. power bank), ...
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350 views

Power consumption of OpenCL code running on a NVIDIA GPU

I am trying to run OpenCL code for a MJPEG decoder on a Nvidia GPU (Tesla K20c). I asked questions on other stack exchange websites about implementing the decoder on the GPU and I am now trying to ...
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3 answers
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Does "Reserve Battery Level" in Windows perform any function besides the popup?

In Windows 7, when a system reaches the Reserve Battery Level, does the OS perform any function(s) besides showing a popup indicating that the Reserve Battery Level has been reached? According to ...
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3 votes
6 answers
6k views

How can I turn my laptop display off completely (while script is running)?

I want turn my laptops (Lenovo 100s) display off completely because I'm running a little script on it and I don't want waste energy. Because I run a script, it's not possible using Windows settings to ...
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Sleep / Hibernate Windows if no user input happens at X time

Basically I need to sleep / hibernate a Windows 10 PC if it doesn't register any user input (mouse click, keyboard stroke) at 15 minutes, independently if there is a process preventing it (full screen ...
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1 vote
3 answers
30k views

How to know how much electric power a laptop is consuming?

On a laptop charger adapter it is written '65 Watt'. When I am using that laptop plugged into an AC socket, does it mean that it consumes 65 watt per second? I think it actually depends on usage. ...
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109 votes
5 answers
152k views

When do I need a pure sine wave UPS?

I would like to buy a rack UPS that would support all the IT related electronics in a SOHO room. This include switches, routers, PCs, servers, NAS. During my research I found out that there are ...
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-1 votes
3 answers
3k views

What do OUTPUT charts of PC Power Supplies mean?

I'm looking at various power supplies and they all come with different output cables. They also have different OUTPUT charts, for example: What I'm wondering: What are these output columns are ...
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1 answer
11k views

Understanding the output of /sys/class/power_supply/BAT0/uevent

Ubuntu shows the remaining battery time on my desktop as ~2 hours. I was trying to arrive at this same value from /sys/class/power_supply/BAT0/uevent. The output of cat /sys/class/power_supply/BAT0/...
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2 votes
1 answer
933 views

Does the choice of CPU affect the energy budget of a commodity server farm? [closed]

How does the choice of CPU affect the energy budget of a commodity server farm? I'm wondering how much it costs per year to power the kinds of commodity servers Facebook, Twitter et al. use. Let's ...
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2 votes
0 answers
42 views

How to monitor energy usage in processor

I'd like to monitor the energy consumption of cpu on a server. I've studied about IPMI and with it is possible monitor cpu directly at hardware. I tested some software, like powertop, but I believe ...
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1 answer
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Why do USB ports cease to work? [closed]

I had an e-reader plugged into one of the 3 USB ports of my laptop. Later I realized it wasn't charging up anymore. I switched ports and the issue was gone. Why do USB ports stop working suddenly?
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5 votes
3 answers
9k views

How much power does the Netgear WNDR3800 (N600) router consume?

I am interested in the actual (i.e., measured) power consumption of a Netgear WNDR3800 router (also known as N600 wireless dual band gigabit router) I couldn't find any reliable indication online, ...
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1 vote
1 answer
923 views

lowest achievable watts for decent resolution display?

I have an unusual question. The scenario is onboard computing / entertainment for a live aboard boat with a very tight energy budget. I'm trying to figure out what is the most energy efficient ...
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4 votes
4 answers
5k views

Temporarily change energy settings without having to change my power plan in Windows 7

I'm not particularly fond of windows 7's energy management features. I think it's really cumbersome as I seem to have to change the current plan to do anything. And sometimes I don't want to change ...
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