Questions tagged [power-consumption]
80 questions
35
votes
5 answers
Does installing larger RAM means consuming more energy?
Since every bit of a dynamic memory module needs to be refreshed to keep it's data, does that mean that if I install a module with more capacity than the current one on my laptop, more energy will be consumed?
And how big will the difference in…
Lawand
- 690
19
votes
3 answers
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 regular HDD connected to laptop's USB socket as…
Lexx Luxx
- 429
15
votes
8 answers
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 going to use is the SteelSeries Rival. Do I risk…
onimoan
- 305
13
votes
11 answers
Will leaving the laptop power brick connected to the power socket be dangerous?
My co-workers (who worked with the company longer than I have) loves to remove their laptop's power cord when they need to move around the office.
I frown on this practice since they usually don't remove the power brick from the power socket. I've…
MrValdez
- 777
13
votes
7 answers
How can I calculate power consumption of my PC in Watt?
How can I calculate power consumption of my PC in Watts, to prove my House owner (I live on rent), my PC doesn't consume much power? He blames me for huge power bills even though he uses a Fridge, A.C. etc and his son watches the TV all the time.
We…
metal gear solid
- 9,124
11
votes
3 answers
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. Why isn't the power usage around 250 * 0.92 = 230…
Franck Dernoncourt
- 24,246
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10
votes
3 answers
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 to energize all the pixels that need to be…
samsamara
- 415
10
votes
4 answers
Multicore CPU energy requirement and load balancing
I am interested in load balancing for multicore CPU systems. If you use 1 CPU with multiple cores, is it more energy efficient to balance the load on several cores, or try to fill up single cores and leave others idle.
The basic assumption is that…
private_meta
- 2,474
8
votes
2 answers
What's the component that consumes most power in a computer?
I've never been a serious hardware guy, so I got this question. What's the component that consumes the most in a computer? And more generally, how is distributed (more or less) the consumption among different components (processor, MB, RAM, disks,…
Stefano Borini
- 2,424
7
votes
3 answers
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
Let's say I put in a second card for crypto-mining…
Jacksonkr
- 494
6
votes
5 answers
Solid State Disk for a desktop computer
I am building a new desktop computer and would like the performance and energy benefits of a solid state hard drive of 128GB-256GB.
Looking around the internet I can't seem to find anything suitable. Are these disks still not worth buying?
The…
lox
- 679
6
votes
2 answers
Reduce power use on computer
I watch a lot of movie's on my computer which is connected to my TV. Problem is i built the pc to be a gaming computer and it has the power supply to match (1200w).
Is there a way to set it into a "Low power mode" whilst i am playing a movie to use…
admintech
- 7,032
6
votes
0 answers
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 hours, 0 minutes
Summary: 2419.8…
Szigyártó Mihály
- 161
6
votes
3 answers
Do high-end graphics cards raise your electricity bill by much?
I currently own an Radeon HD 5570 graphics card which "supposedly" consumes a very small amount of power. The problem is that it stutters during some games and movies. My machine is an Intel quad core i5 - 750 with 4 gig ram running on windows 7…
TheOne
- 1,405
5
votes
4 answers
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 and powertop shows minimal CPU and no GPU…
diviaki
- 201