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Windows 7: Question about power supplies.

09 Mar 2010   #1
starwolf1336

Windows 7 Professional 64bit
 
 
Question about power supplies.

When the computer is turned off, is the power supply still pulling power from the outlet? Was wondering if i could cut back on my power bill by unplugging it when i'm not home or w/e.
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09 Mar 2010   #2
TGSoldier

 
 

No

When it's off. It's off.
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09 Mar 2010   #3
pebbly

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

thats an interesting question to answer , some do and some don't mine still draws some power because i can see the mobo led on through the plexiglass side panel when my pc is off , another member with more knowledge of psu's will give the why's and wherefores this is just my observation
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.

09 Mar 2010   #4
pparks1

Windows 7 Ultimate x64
 
 

The best way to know for sure is to invest in a Kill-A-Watt meter and check it yourself.
P3 - Kill A Watt

These meters are like $20 on Amazon.com
Amazon.com: P3 International P4400 Kill A Watt Electricity Usage Monitor: Electronics
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09 Mar 2010   #5
TGSoldier

 
 

Quote   Quote: Originally Posted by pebbly View Post
thats an interesting question to answer , some do and some don't mine still draws some power because i can see the mobo led on through the plexiglass side panel when my pc is off , another member with more knowledge of psu's will give the why's and wherefores this is just my observation
Ah good point. Looks like I was wrong.

However, if it does pull power when your computer is off, it's not going to pull much. Unplugging it will probably save you a couple dollars a year. ( I could be wrong again )
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09 Mar 2010   #6
pebbly

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

Quote   Quote: Originally Posted by TGSoldier View Post
Quote   Quote: Originally Posted by pebbly View Post
thats an interesting question to answer , some do and some don't mine still draws some power because i can see the mobo led on through the plexiglass side panel when my pc is off , another member with more knowledge of psu's will give the why's and wherefores this is just my observation
Ah good point. Looks like I was wrong.

However, if it does pull power when your computer is off, it's not going to pull much. Unplugging it will probably save you a couple dollars a year. ( I could be wrong again )
yours could be newer, greener model than mine is, TGS, that does not mean you were wrong i would expect the current draw to be milliamps ,not really worth bothering about the savings on that!
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09 Mar 2010   #7
Dwarf

Windows 8.1 Pro RTM x64
 
 

With ATX PSUs, unless they are unplugged from the mains, switched off at the mains socket or switched off on the PSU itself (if there is a mains switch on the back adjacent to where the mains lead plugs in - note that not all PSUs have such a switch), then power is still being supplied to the motherboard and certain peripherals if the necessary jumpers are so positioned. This is the Standby power, and it is that which enables systems to be started other than by means of the power switch on the front panel (WOL, Wake on RTC, etc).
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09 Mar 2010   #8
pebbly

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

thank you for the information Dwarf
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09 Mar 2010   #9
Dwarf

Windows 8.1 Pro RTM x64
 
 

You're welcome, Kathryn.
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09 Mar 2010   #10
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Phooey on being green.




Run it like there's no tomorrow. Question about power supplies.-elmani.gif


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