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How loud is your water cooling rigs? - Page 5

post #41 of 57
Thread Starter 
I seem to be able to isolate the loudness problem. I'm actually using (4) Corsair fans for push & pull on 2 rads. The extra (2) fans are CM Excalibur fans running at 2,000 rpm max. Those (2) slower Excalibur fans seems to be the ones making most of the noise.
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post #42 of 57
pitch'em and get some GT's or more of the Corsair if you like. I have read some discussion of how the amount of CFM in push should be greater than the CFM in pull but I have never seen data to back it up.
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post #43 of 57
Thread Starter 
I'll get another 2 Corsair fans. They seem very quiet. Those older CM Excalibur fans that I have actually have better specs (higher CFM & lower dBA). Somehow the Corsair fans performed better. You can't really trust the specs this days.biggrin.gif
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post #44 of 57
Quote:
Originally Posted by pgdeaner View Post

pitch'em and get some GT's or more of the Corsair if you like. I have read some discussion of how the amount of CFM in push should be greater than the CFM in pull but I have never seen data to back it up.
thumb.gif
Look here.
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post #45 of 57
Mine is currently loud as hell, due to a noisy MCP350 pump...
    
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post #46 of 57
Thread Starter 
Quote:
Originally Posted by Capt Proton View Post

Look here.

Good info. I need to buy shrouds.thumb.gif
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post #47 of 57
Thread Starter 
To add, I'm just very surprised about what I've seen so far as the temp. I got this noise that I've tried to control & finally fixed yesterday. I got only 4 Corsair fans running as push/pull (as I removed the noisy CM Excalibur fans) on 1 thin & 1 thick rads. I tried to set the fans to 1,100 rpm & game at maximum settings. I was amazed at those 4 Corsair high static pressure fans. It was able to hold the temps at around 60-64 c for more than an hour. It doesn't look like the temps rising.

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post #48 of 57
Yeah, the SP120s don't have quite the CFM/noise ratio that AP-15s do, but when cranked up they will pull air backward through an AP-15.
post #49 of 57
Quote:
Originally Posted by Capt Proton View Post

Look here.

Great article.
post #50 of 57
Currently, my custom rig with 2 360 radiators and 6 Gentle typhoons at 1400RPM and 1 MCP655 pump is barely noticeable, but you can hear it. I'm re-working that system now to add another 360 radiator and adding a total of 18 Gentle Tyhoon 1450RPM fans and adding a 2nd MCP655 pump. I expect the noise to be more, but the calculated noise level SHOULDN'T be too bad.

I crunched the numbers and here is what I came up with:
Quote:
You know you got computers on the brain when you are laying in bed at 2 in the morning and suddenly think to yourself ... OMG, how loud will this thing be? Should I have ordered 18 AP-13 or AP-12 fans instead?

Well, after running some numbers, it really doesn't matter much. Pretty much the most noise will be generated from the 2 MCP655 pumps, which puts out about 33dBA each.

9 800RPM fans AP-12 @ 9dBA = 18.54dBA (36.08dBA w/2 MCP655 pumps) = 28.25 CFM per = ~120 Watts @ 10C
18 800RPM fans AP-12 @ 9dBA = 21.52dBA (36.15dBA w/2 MCP655 pumps) = 28.25 CFM per = ~140 Watts @ 10C

9 1150RPM fans AP-13 @ 16dBA = 25.54dBA (36.37dBA w/2 MCP655 pumps) = 37 CFM per = ~160 Watts @ 10C
18 1150RPM fans AP-13 @ 16dBA = 28.52dBA (36.72dBA w/2 MCP655 pumps) = 37 CFM per = ~190 Watts @ 10C

9 1450RPM fans AP-14 @ 21dBA = 30.54dBA (37.08dBA w/2 MCP655 pumps) = 50 CFM per = ~215 Watts @ 10C
18 1450RPM fans AP-14 @ 21dBA = 33.52dBA (37.94dBA w/2 MCP655 pumps) = 50 CFM per = ~260 Watts @ 10C


For those that don't already have this site, you might want to book mark it. It is simply wonderful for calculating noise.

Combining decibels - up to 10 levels
Combining decibels − up to 30 levels

(From my build log: The Betty )


I've also just gotten new water cooling kit for my TC Folding rig and I've running that on the bench now, and I honestly can't hear it at all beyond 2 feet away.

[Build Log] Project White Ranger - 24/7 Team Competition i7 Folder

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