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BOINCers Gone Bonkers 17 - April 3rd-5th 2012 *OVER* - Page 8

post #71 of 392
Found out today ... that 50 DBA is a hellueva lot louder than 44 DBA

I really doubt that this fan is 50 DBA in fact.

I really believe its 60-70 DBA from the sound...
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post #72 of 392
Quote:
Originally Posted by kyismaster View Post

Found out today ... that 50 DBA is a hellueva lot louder than 44 DBA

I really doubt that this fan is 50 DBA in fact.

I really believe its 60-70 DBA from the sound...

Yep it should be, as "loudness" is measured on a logarithmic scale:

L (in dB) = 10 * log (P1/P0)

Where P1/P0 is the power ratio, or the intensity of the noise divided by a reference intensity.

So, 50 dB => P1/P0 = 10^5 = 100,000 and 44 dB => P1/P0 = 10^4.4 = 25,119.

Thus, 50 dB is actually about four times as loud as 44 dB. smile.gif
post #73 of 392
Quote:
Originally Posted by jetpak12 View Post

Yep it should be, as "loudness" is measured on a logarithmic scale:
L (in dB) = 10 * log (P1/P0)
Where P1/P0 is the power ratio, or the intensity of the noise divided by a reference intensity.
So, 50 dB => P1/P0 = 10^5 = 100,000 and 44 dB => P1/P0 = 10^4.4 = 25,119.
Thus, 50 dB is actually about four times as loud as 44 dB. smile.gif

thats. really. really. bad then tongue.gif i mean its 130 CFM, but... I'm not having that run for 24/7 next to me xD
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post #74 of 392
Quote:
Originally Posted by kyismaster View Post

thats. really. really. bad then tongue.gif i mean its 130 CFM, but... I'm not having that run for 24/7 next to me xD

Ok, it might have been a slight exaggeration, as apparently a four-times increase in the power level only means that the intensity of the sound wave is 4 times as high, but the change in hearing perception is actually less, somewhere closer to 150% instead of 400%. But it gives you the idea.

The oft-quoted measure is that an increase of 10 dB is twice the volume.

Check out this website if you want a really confusing explanation. tongue.gif
post #75 of 392
Quote:
Originally Posted by jetpak12 View Post

Ok, it might have been a slight exaggeration, as apparently a four-times increase in the power level only means that the intensity of the sound wave is 4 times as high, but the change in hearing perception is actually less, somewhere closer to 150% instead of 400%. But it gives you the idea.
The oft-quoted measure is that an increase of 10 dB is twice the volume.
Check out this website if you want a really confusing explanation. tongue.gif

Hmm, very interesting.

I might just switch out that small - high CFM fan, for a larger lower RPM with High CFM.

I can stand low resonance DBA, not the high squeel of that 120mm tongue.gif

I know I usually don't whine about fan noise, but this thing sounds like a delta.

i guess that makes sense because, they used this fan to cool an entire OEM computer!

tongue.gif

i guess putting it on a fan controller might help.
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post #76 of 392
Ginger

I say... You win. My GPU started to flatline today.
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post #77 of 392
Quote:
Originally Posted by kyismaster View Post

Ginger
I say... You win. My GPU started to flatline today.

Damn, really sorry to hear that.

I spent the day trying to crank my card's OC because of you; got to 975 on the core, not sure if it is fully gaming stable but it has been running Donate for an hour and watching Netflix with no issues. Going to drop it down to 915 for overnight runs until I am sure that it is stable.

Hope you get your card up and running again!
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post #78 of 392
Quote:
Originally Posted by GingerJohn View Post

Damn, really sorry to hear that.
I spent the day trying to crank my card's OC because of you; got to 975 on the core, not sure if it is fully gaming stable but it has been running Donate for an hour and watching Netflix with no issues. Going to drop it down to 915 for overnight runs until I am sure that it is stable.
Hope you get your card up and running again!

thanks man!

Yeah for some reason my card BSOD's after 950 mhz, even though temps are stable, maybe under volted? don't really know how to add more voltage to my lanes

i gotta hand it to you , your keeping up with my 6870 + 5570
Edited by kyismaster - 3/25/12 at 8:14pm
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post #79 of 392
Update: recovered man down

Seems like im back in the game.

For some reason my computer knocked test561.exe aka Donate@homes client to "low" when it should be "high" priority.

And now im about 400k behind ginger. doh.gif

go play some more witcher 2 ginger.
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post #80 of 392
lol, my ppd will drop when diablo 3 comes out smile.gif
    
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