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Will adding another 580 double the noise??

post #1 of 22
Thread Starter 
Iam very particular about noise, I like my rig as silent as humanly possible
So wondering if adding another 580 into the mix would double the idle noise? Load noise not much of a concern cos then the game sounds will overwhelm anything.

Thanks
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post #2 of 22
decibels are not on a linear scale, so no 2 will not double the noise but it will be louder
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post #3 of 22
rocklobsta is right you wont double the noise by adding another card however one thing to think about is if there going to be sanwiched together the top card will need to run at a higher fan speed to keep temps down due to being starved of air
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post #4 of 22
It wont double the noise, but it will be slightly louder NOT twice as much but say around 10-15% more loud ?....

Just plug your monitor to the bottom card, that should even out the heat and noise a bit , SLI should give you 40% more performance though, I say go for it
post #5 of 22
You would need to be worried if you wanted to add a second 6990 580's run cool, you could get away with lower fan speeds in exchange for slightly higher temps, but no, it won't double. If anything, it will sound the same, unless you sandwich them right next to each other.
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post #6 of 22
Thread Starter 
Quote:
Originally Posted by jellis142 View Post
You would need to be worried if you wanted to add a second 6990 580's run cool, you could get away with lower fan speeds in exchange for slightly higher temps, but no, it won't double. If anything, it will sound the same, unless you sandwich them right next to each other.
wow great idea, repped I will buy another
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post #7 of 22
most review sites that test SLI 580's noted about a 3-4db increase at max. And 2 580's was still less noisy than a single 480
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post #8 of 22
Quote:
Originally Posted by SadSoul View Post
wow great idea, repped I will buy another
Is something wrong with your keyboard? You posted instead of .
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post #9 of 22
Thread Starter 
wow thats brilliant nice
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post #10 of 22
Decibels is a logarithmic scale not linear every 3db increase is a double in power. 200 watts of sound will be 3db louder than 100 watts of sound.. Does that explain it a little.

since your technically doubling the power i would expect a ~3db increase of sound...
Now since you have logarithmic hearing as well you would need approx 10db increase in sound to "sense" a doubling of sound...
a 90db sound feels twice as loud as a 80db sound

by the time i typed that 3 other responses...
Edited by Mr. Original - 4/1/11 at 10:49pm
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