New
#11
psu watts help
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New #12
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
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New #13
More at NeweggThe 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.
I think your initial question was answered, but you has a 800W PSU there. computer power usage
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New #14
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
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New #16
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.
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New #18
The Killawatt device was suggested in his other thread I linked too. See ya.
One answered question only brings on another one.
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New #19
Quote
Oh boy! We got a live one here!
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