Questions tagged [power-consumption]

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Why idle power usage is much higher under linux than macos on the same, intel-based macbook?

Recently I switched from macos to linux on a mid 2014 8GB retina macbook pro. I noticed when I just edit text files in vi running in terminal, the battery runs out about twice as fast on linux. Top ...
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1 vote
1 answer
82 views

Why doesn't "System Idle Proccess" make cpu hot and consume power?

I recently found out that there is a proccess called "System Idle Proccess", which takes all of the CPU time while it's idle so that the computer doesn't crash or freeze. Why doesn't the CPU ...
4 votes
0 answers
2k views

How to debug tick_sched_timer high power usage?

My tick_sched_timer is using a lot of power, this is the output of powertop: The battery reports a discharge rate of 24.7 W The power consumed was 516 J The estimated remaining time is 3 ...
1 vote
0 answers
83 views

Laptop: Logging out increases power consumption

I have a Lenovo X1 Carbon with Windows 10. When I'm logged in it uses 9W, but when I log out, is uses 15W - consistent for more than 10 min. Battery is fully charged and everything is up to date. ...
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1 answer
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How much power does a motherboard in laptops consume and which type of motherboard (ITX or ATX) is installed in laptops? [closed]

I was not able to find that information online. I saw that for desktops the power consumption does not go over 100W.
0 votes
1 answer
27 views

How do I load test large UPSs?

I'm currently the only hardware repair person at my work and I've been left with a pile of UPSs that need to be fixed and tested. As it is I've been load testing the smaller (250-500 watt) units using ...
0 votes
1 answer
902 views

Can I achieve a similar power usage to the i5-7500T with an i5-7500 by underclocking?

I'm upgrading my aging NAS hardware to something more recent, and I've decided that I will either buy an i5-7500 (3.4 base, 3.8 boost, 65W) or an i5-7500T  (2.7 base, 3.3 boost, 35W). Given that the ...
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1 vote
1 answer
17k views

Side effects of lowering minimum processor state under power options to 5% for AMD Ryzen CPU

I recently switched from Intel CPU to AMD Ryzen 7 2700x CPU. For Intel CPU, under "power options"->"processor power management"->"minimum processor state", the default is 5%. For AMD using the "AMD ...
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7 votes
3 answers
3k views

Will a PSU rate-limit device's power consumption?

Scenario I have a Computer with a 450w rated PSU. I assume ~80 efficiency which brings me down to 360 for the computer. My video card (gtx 1060) max consumption is somewhere between 120-134 Question ...
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0 votes
0 answers
305 views

Measuring Intel Atom total power consumption

I have Intel Atom notebook with integrated Intel HD graphics. I want to measure total CPU + GPU wattage while running a game. To do so I'm using RTSS + HWInfo. There are CPU Package Power and GT Cores ...
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0 votes
1 answer
184 views

Upgrading my notebook's CPU to one more powerful yet more power consuming

I have a hardware question. My notebook is a Dell Inspiron 1470. I'd like to upgrade my CPU from the original one to a more powerful one but I wonder if the significantly bigger power consumption is ...
0 votes
0 answers
78 views

Estimate power draw with CPU usage

Is there a way to estimate the power consumption with the CPU usage that is shown in the task manager, if I know the TDP? To be clear, I am talking about the power consumption of the CPU alone, and ...
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0 votes
1 answer
108 views

Trying to choose a low power draw M.2 SSD for mobile use, but power data is inconsistent?

I'm going to be using an M.2 SSD via USB3 in place of a USB flash stick, for my notebook. The main "heavy" use will be at home or work, to load it up or unload it with files, and in those places, the ...
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1 vote
2 answers
8k views

Power Consumption of Dell PowerEdge Servers

I'm completely new to this field and I apologise if this is the wrong forum. I am looking to buy 3x Dell PowerEdge 1850 and 1x PowerEdge 2850 servers for home use. However, I am worried about their ...
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3 votes
1 answer
3k views

Power limit doesn't affect GPU's performance?

My mining rig's GPU each draws approximately 150 watts with an average hash rate (it's performance level) of 29 M.hash/s. While I was tweaking it's settings, I limited its max power draw to 135 watts ...
0 votes
1 answer
217 views

Is it a bad idea to keep laptop suspended most of the time? [duplicate]

I have an old netbook (Acer Aspire One 531h) which I am planning on setting up as a Xubuntu powered Plex client for my parents. They will control it using the android Plex app and a WoL utility for ...
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1 vote
1 answer
88 views

Does power supply wastes power if connected to a laptop with an almost dead battery?

Does it keep chargin the battery all the time thus wasting power?
16 votes
3 answers
63k views

What is typical power consumption of 2.5" laptop external hard drive connected to USB socket?

What is the approximate power and current consumption of a 2.5" laptop external Hard Drive 7200RPM SATA (300Gb), connected to a laptop USB port as an external hard drive? I've heard that using a ...
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0 votes
1 answer
228 views

Difference between consumption in static and dynamic mode for DRAM

In all of datas about RAM, the consumption of this component is considered as equal to more or less 10 W. But I did'nt find if it's in static or in dynamic mode. I'm looking for the difference in ...
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2 votes
3 answers
1k views

Having a rough estimate of energy consumption of the computer.

I'm developing an app which needs to know about the energy consumption on computers (On windows). I realized the OS has no functionalities to support this directly, so my workaround is collecting info ...
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-1 votes
2 answers
8k views

How to programmatically monitor power consumption on Windows?

I'm developing an app to monitor energy consumption of users' computer (for example how much energy it consumes on normal mode and energy save mode, battery status, etc) and I was wondering if there ...
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3 votes
1 answer
3k views

Making HDD to spindown when not mounted but to keep it spinning while mounted

Is it possible to make harddisk spin when it's mounted and to stop spinning when I unmount it? I was finding answers on the internet, but there is not any precise answer for such a question. There is ...
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0 votes
2 answers
208 views

Does the amount of free space on a HDD have an effect on power consumption?

I a couple of friends on Facebook have started spreading a message stating that if you delete 30 old E-Mails from your inbox it would save enough power to light a light bulb for 24 hours. They also ...
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0 votes
1 answer
447 views

High power consumption with 0% GPU utilization

How comes the graphic card's power consumption is sometime quite high while the GPU utilization is 0% (according to nvidia-smi's output)? E.g.:
11 votes
3 answers
3k views

Relation between GPU utilization and graphic card's power consumption

I wonder what the relation between GPU utilization and graphic card's power consumption is. E.g. in the screenshot below, GPU 2's utilization is 92%, while the power usage is 129 watts out of 250. ...
1 vote
0 answers
212 views

How can I get a low power virtual machine?

How can I get a low power Linux virtual machine? I usually use virtual machines on my laptop to use some GNU/Linux programs, and I've found that at the very moment I start a Virtual Box machine, the ...
0 votes
1 answer
92 views

Is there a way to pause mosh from 3 second UDP updates?

Is there a way to pause mosh in a Cygwin installation? I think it's causing an excessive battery drain for my AndroidAP phone, since it's designed to be sending packets every 3 seconds, which is not ...
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1 vote
0 answers
155 views

How to make laptop only start charging when under 20% while always plugged in?

I want my laptop only to charge when under X% of battery is left, while always plugged-in to charger. I have a laptop that has to be up in running for long periods and I want to lower the ...
0 votes
1 answer
51 views

What aspects of running modern videogames cause most of the power consumption on GPU's?

A 3D game has to render polygons, their textures, detect collisions etc. and current GPU's eat an enormous amount of power. Which aspect(s) eat the majority of the power used on a GPU when a typical ...
3 votes
2 answers
2k views

In Linux, how can I determine the power consumption of my HDD?

Is there a way to determine how much power my HDD(s) are using? I'm running typical (oldish) desktop with an 848P chipset and Debian GNU/Linux 7.6 (Wheezy).
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1 vote
1 answer
153 views

How do I lower processor usage to its bare minimum operating? [duplicate]

I am running on Windows 7 and I have the habit of not turning off my computer at all. This is due to me hosting some services on my pc that have external users. The question here is, how do I lower ...
1 vote
1 answer
7k views

How do I find the power consumption of a sound card?

I have a custom built desktop PC where I carefully chosen the parts so that it is still relatively powerful but has very low energy consumption. Now after I see that the inboard audio is not able to ...
0 votes
1 answer
97 views

How can I compare effective power usage of two CPUs / CPU+Mobo+Mem combinations?

I have this server which does mostly file sharing (with the associated storage). No serious number crunching and it isn't the firewall. My current box has a Celeron D processor (Prescott 336 2.8 GHz); ...
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2 votes
1 answer
5k views

Laptop power supply unit compared to PC power supply unit

PC power supplies are relatively huge compared to those used with laptops. But why is this so when a laptop today can have an equal level of performance as a high end PC? Are they both switching ...
3 votes
1 answer
174 views

Choosing the right UPS

I'm trying to determine the size of the UPS I should buy. Ideally, I would like something to keep my system on for an hour in case of a power cut but I don't have the budget for that. Basically I want ...
15 votes
8 answers
41k views

USB backlit keyboard power consumption

Does someone know the power consumption of an USB backlit keyboard like the SteelSeries Apex? I'd like to connect it to a Keyboard/Mouse USB Switch that goes to PC by one USB 2.0 cable. The mouse I'm ...
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-2 votes
2 answers
874 views

Planning out an NES PC build (on the cheap) [closed]

I'm in the process of building a PC inside an NES case. I'm trying to get as much power out of it without breaking the bank. Rigging up the power switch and reset has been well documented, so this isn'...
2 votes
1 answer
75 views

Pc consumes 13W also when PSU is switched off

I noticed that my pc consumes 13W also when PSU is switched off. So I opened the PSU and I found a yellow box directly connected with the plug's socket, before the on-off button. This yellow box has ...
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-1 votes
1 answer
112 views

How many amperes and watts do I need for this setup?

I'm trouble calculating how many amperes I need for this setup. I know I need around 500-600W, but my current PSU is 600W but only has 14A on the +12V rail and I don't know if it can run this new ...
2 votes
0 answers
1k views

RAM capacity vs power consumption in S3 Suspend-to-RAM mode

My netbook with 1GB DDR2 RAM module takes 16% of battery for 24 hours of S3 standby mode (STR - Suspend-to-RAM). That amounts to the power consumption of 0.32 Watts in standby. That also means that ...
1 vote
2 answers
925 views

Custom built machine has much higher power consumption than expected

I built a machine according to the specs of a computer magazine (c't, Germany). According to the magazine, the power consumption should be at around 10W. I don't want to go into the specifics of the ...
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0 votes
2 answers
1k views

How much power did a computer consume for an hour?

Imagine a computer system having 450W SMPS . It have 65W CPU and 4GB RAM. The computer is a server which frequently uses RAM and CPU. How much power does it will consume ? (I asking this to ...
8 votes
3 answers
16k views

LCD/LED screens; how color affects the power consumption?

I have read on web, for CRTs black color would reduce the power consumption of the monitor but for LCDs it's the white color that reduce the power consumption. It says "The way LCD's produce black is ...
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0 votes
2 answers
533 views

Power consumption percentages of notebook (and netbooks) components [closed]

I see many component manufacturers boast that their products use N% less power than their competitor or older version product, but nobody says how much it matters in comparison to total power ...
2 votes
2 answers
1k views

UPS acting up after upgrading GPU

I have a second PC, hooked up to a 650VA UPS. I recently upgraded its graphics card from a Radeon HD6850 to a Geforce GTX580. When I updated the Windows Experience Index thingy, the UPS started ...
0 votes
3 answers
226 views

Battery friendly environment for watching movies and reading e-books

On my laptop, I'm currently running Ubuntu 12.04 Beta 2, which works great. But sometimes I just want to lie in the couch watching a movie or reading an e-book. At times like that, the power ...
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3 votes
2 answers
10k views

Reduce power consumption of gaming computer while idle

This is my current build: EVGA X58 (first generation) motherboard Intel i7 965 clocked @ 3.3 Ghz 3x DDR3-1600 Corsair RAM at stock timings and voltages Corsair AX750 80 Plus Gold PSU 1 ...
1 vote
1 answer
2k views

How to make VGA display go into standby when no computer/laptop connected

At my work most people use laptops, in combination with a stand-alone Dell LCD (connected through a VGA cable). Problem: if you unplug your laptop from the display, the display doesn't go to sleep (...
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1 vote
2 answers
376 views

pc watts usage comparison

If I have an atom pc drawing 40 watts at peak usage, does that really mean it is consuming less power than a 60 watt lightbulb? I'm no electrician, and I have no knowledge of how electricity is ...
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4 votes
2 answers
2k views

P4 vs. I3/i5 *T in power consumption and performance

I am running an Intel P4 prescott with HT on my home server (linux file server on encrypted disks on software-RAID5 and virtualisation host for three further machines). The performance for this ...