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Windows 7: psu watts help

23 Jul 2011   #11
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Quote   Quote: Originally Posted by Wicca View Post
my psu uses 600 watts and has a 86 percent efficienty so how much does my computer use
Your PSU does NOT use 600W, that is the max rated output at a full load. Amps is energy Usage.
Use a Power calculator based on your system components, we don't know what they are...no system spec filled out.


My System SpecsSystem Spec
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23 Jul 2011   #12
Wicca

 
 

the computer needs a 450 psu as that is what it need but i have a 600 watt with 86 percent efficeny so would that not lower it to 160 watts on full load also my graphics card is at 5 percent loads when i watch a dvd geforce 8800gtx
My System SpecsSystem Spec
23 Jul 2011   #13
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Quote:
The efficiency of a power supply unit is the percentage of total output DC power in relation to total input AC power. The portion lost during conversion is mostly in the form of heat.

This index directly relates to your power bills. For example, if your computer system consumes 300W of power, using a PSU with 85% efficiency will require about 353W input power, and a 70% PSU will pull 428W power from the wall. It is not hard to know how much more money you are going to pay using a low efficiency power supply, and this number will typically grow as time goes by.

A power supply with a higher efficiency rating will not only help save costs - the heat dissipated will be much lower as well, resulting in better reliability and durability, and can also help reduce noise as its cooling fan can operate at lower speeds and still provide adequate cooling.
More at Newegg

I think your initial question was answered, but you has a 800W PSU there. computer power usage
My System SpecsSystem Spec
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23 Jul 2011   #14
Wicca

 
 

how can a computer use 400 watts the is alot of electrity i am annoyed at this i thought it uses more then a 42 inch tv 193 watts
My System SpecsSystem Spec
23 Jul 2011   #15
Wicca

 
 

filled in my system spec
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23 Jul 2011   #16
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

The only way to know how much power you actually use is to measure it with a separate device, such as a Killawatt. At idle, you may use less than 150 watts. I'm just guessing based on your components list. If you don't use a separate device, all you can do is guess and most people guess way too high.
My System SpecsSystem Spec
23 Jul 2011   #17
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Oh boy! We got a live one here!
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23 Jul 2011   #18
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

The Killawatt device was suggested in his other thread I linked too. See ya.
One answered question only brings on another one.
My System SpecsSystem Spec
23 Jul 2011   #19
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by Wicca View Post
filled in my system spec
The Q6600 is good for about 38W at standby, 100W peak.

The 8800GTX is supposed to max out at 140-170W. (Varies by manucaturer.)

Assuming an 86% efficiency, 270W would require 314W from the mains. It'd be much less at idle.
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 psu watts help




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