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Asus GTX 670 how many Amps? - Page 3

post #21 of 34
Quote:
Originally Posted by TwoCables View Post

I know that it's still a very fundamental law.  That's just our current understanding of how we think things work.  smile.gif

No, it's impossible since it requires work. If free or 100% efficent work was avaliable, then it would mean then a perpetual motion machine would be possible.
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post #22 of 34
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post

No, it's impossible since it requires work. If free or 100% efficent work was avaliable, then it would mean then a perpetual motion machine would be possible.

That just seems like a dream to me. If that was possible. Then we would have no need for power at all.
     
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post #23 of 34

Time will tell.  I will leave it at that.

 

I apologize for bringing it up.

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post #24 of 34
Thread Starter 
You could not be more true. Only time will tell us.
     
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post #25 of 34
ok ok, can I back track please. is my 520W pulling more from the wall then but not passing more to the system due to it's efficiency? Cool that makes sense, cheers smile.gif
post #26 of 34
dhug, think of your system usage being less than what is reported at the wall as a reflection upon your power supply being less than 100% efficient.The wall figure is what you pay for, but total system need is calculated with the loss from the operation of the power supply ignored.I am waiting for the 105% efficient power supplies developed with the aid from technology discovered at Roswell.
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post #27 of 34
so it's pulling 520W but can only give 80ish% of that due to efficiency?
post #28 of 34
dhug,Just remember it costs you to run your power supply.Some units are 80% efficient when converting the AC to DC.What you are really doing with a power supply is converting the AC power from the wall into the DC power the PC needs, and there is a loss in the conversion process.
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post #29 of 34
Quote:
Originally Posted by dhughesuk View Post

so it's pulling 520W but can only give 80ish% of that due to efficiency?

 

It all depends on what your system is pulling from the PSU.

 

So let's say your system is pulling exactly 350W from your PSU under full load.  If your PSU is 85% efficient, then that means it is pulling about 412W from the wall in order to deliver that 350W to your system.  So if your PSU were 100% efficient, then it would pull 350W in order to deliver 350W.  Those 62W are lost as heat, but that's not bad considering that 5+ years ago or more, 70% efficiency was a bit common.  So if your PSU were only 70% efficient, then it would have to pull 500W from the wall outlet in order to deliver 350W.  Fortunately, the capacity rating of PSUs is regarding how much it can deliver to a computer system and not how much it can pull from the wall.

 

So yeah, it all depends on what your system is pulling from your PSU.

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It's a computer!
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post #30 of 34
Quote:
Originally Posted by TwoCables View Post

It all depends on what your system is pulling from the PSU.

So let's say your system is pulling exactly 350W from your PSU under full load.  If your PSU is 85% efficient, then that means it is pulling about 412W from the wall in order to deliver that 350W to your system.  So if your PSU were 100% efficient, then it would pull 350W in order to deliver 350W.  Those 62W are lost as heat, but that's not bad considering that 5+ years ago or more, 70% efficiency was a bit common.  So if your PSU were only 70% efficient, then it would have to pull 500W from the wall outlet in order to deliver 350W.  Fortunately, the capacity rating of PSUs is regarding how much it can deliver to a computer system and not how much it can pull from the wall.

So yeah, it all depends on what your system is pulling from your PSU.

Who needs PSUCalc when you've this guy wink.gif
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