[SadSoul]

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

 

[rocklobsta1109]

decibels are not on a linear scale, so no 2 will not double the noise but it will be louder

 

[Radical_ED]

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

 

[TheBirdman74]

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

 

[jellis142]

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.

 

[SadSoul]

Quote:

Originally Posted by jellis142;12968223
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

 

[rocklobsta1109]

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

 

[Crazy9000]

Quote:

Originally Posted by SadSoul;12968237
wow great idea, repped

I will buy another

Is something wrong with your keyboard? You posted

instead of

.

 

[SadSoul]

wow thats brilliant nice

 

[Mr. Original]

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...

 

[jellis142]

SadSoul, how can you be so sad with all of that power

Open up Crysis, set everything to max and take a stroll through the jungle, that should cheer you up

Just watch out for those Koreans.

 

[Capwn]

Just added a second 570.. It's louder sure. But not by much, and not as loud as a single reference 470 was lol.

 

[noshibby]

My 580's in sli are no louder than when I only had one. Very quiet my hard drives are the loudest things in my computer.

 

[SadSoul]

Quote:

Originally Posted by noshibby;12968731
My 580's in sli are no louder than when I only had one. Very quiet my hard drives are the loudest things in my computer.

Whoa dude u running SLI on an 750??

 

[KBcobra]

Your board has the 2nd pcie slot double spaced. If you add another 580, there shouldn't be a noticeable heat increase or noise due to the card spacing.

 

[daydream99]

It definitely won't double the noise because the 580 doesn't make up the whole system. cpu fans, case fans, etc etc.

 

[Partol]

2 GTX 580's could actually run quieter than a GTX 580. According to Sadsoul's sig, his GTX 580 is overclocked and probably loud due to high fan speed.

With dual-580's, you can downvolt and downclock both cards, while still getting plenty of performance.

My GTX 580 is almost inaudible at less than 70% fan speed. 2 GTX 580's with fan speed less than 70% may acutally be quieter than 1 GTX 580 at 85% fan speed. The key is to undervolt and underclock both cards ... just like on the GTX 590 and reduce fan speed as much as safely possible.

 

[Partol]

Quote:

Originally Posted by SadSoul 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.

Can you actually hear your GTX 580's fan when idle? What is the idle fan speed? 40%?

 

[3dfxvoodoo]

Quote:

Originally Posted by rocklobsta1109;12968188
decibels are not on a linear scale, so no 2 will not double the noise but it will be louder

this

 

[SirWaWa]

at idle almost no difference between one and two cards