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Need some advice making the computer quieter.

Casper312

[H]ard|Gawd
Joined
Aug 29, 2008
Messages
1,762
So i have this case, with 3 thunderblades, which if you cannot click the linky are rated at 78cfm @ 21 dba.

You might be saying, 78cfm for 21dba?! and you want quieter you must be crazy. I'm not, these fans are loud as fuck (excuse my language). I have 3 of them in my case like i said, one in the front as an intake, one on my thermaltake typhoon, and one in the back as an exhaust. Let me tell you, its sounds like a turbine, its so bad that when the computer shuts off i have to turn down my tv from 60% volume to 40%. I was in the insane boat where i once thought that for proper cooling i have to deal with it, but its just too much now.

So im wondering if theres anything out there that can cut this noise, im actually debating on purchasing the expensive nocta fans due to what people say about em. Which in total would be around the price of brand new fucking case.

So here are my choices.

A) Buy Scythe Kama Bays to replace the front mesh grills (Its similar to the antec 900/1200 just that its not attached to a hard drive cage). Which will add some more cooling and remove dust problems and of course noise.

B) Purchase either 4 nocta fans or 4 Scythe slipstreams.

C)Look around to see if theres some kind of switch bay, which would be perfect for me, in the meaning that i can plug in my extra fans, and they will be off, and by the click of the switch, will turn on when needed. Keep in mind the thunderblades are 4 pin molex.

D) Purchase a new case, Perf the lian-li pca05b.

So what are my other choices, or any ideas i can do to solve this? Like my C choice, i have actually unplugged 2 fans when going to bed and noise just goes away. I leave my pc on almost 24/7 doing random crap.
 
http://hardforum.com/showthread.php?t=1384837

Look at my post in that thread.

Also: Use a fan controller if you need any more attenuation. Get one with enough watts per channel. Also note that as most controllers are PWM, fans may tend to sound "clicky" when voltage/RPM is decreased below about ~7v. Thus sometimes you may be better off buying the lower RPM fan from the start if you want to be anal about noise (not a problem for me because my Sanyo Denki fans are good enough :) )

What else? ...

A spacer/duct between the CPU fan and the heatsink may reduce cavitation / turbulence noise and improve temps to some extent.

Edit: Oh, right. Those stamped case fan grills will also contribute similar noise. Cutting those out or using a spacer will help.

Hopefully your PSU isn't too loud...

... same goes for your video card and possibly northbridge fan (if there is one).

Cleaning up the wiring to open up the air-flow path is always a good idea to maximize use of your airflow.

Also: manufacturer dBA ratings are not accurate for our needs. Looking at the tests at Xtremesystems clearly demonstrates this fact.

The Zalman ZM-F3 is sleeve-bearing IIRC.
 
http://hardforum.com/showthread.php?t=1384837

Look at my post in that thread.

Also: Use a fan controller if you need any more attenuation. Get one with enough watts per channel. Also note that as most controllers are PWM, fans may tend to sound "clicky" when voltage/RPM is decreased below about ~7v. Thus sometimes you may be better off buying the lower RPM fan from the start if you want to be anal about noise (not a problem for me because my Sanyo Denki fans are good enough :) )

What else? ...

A spacer/duct between the CPU fan and the heatsink may reduce cavitation / turbulence noise and improve temps to some extent.

Edit: Oh, right. Those stamped case fan grills will also contribute similar noise. Cutting those out or using a spacer will help.

Hopefully your PSU isn't too loud...

... same goes for your video card and possibly northbridge fan (if there is one).

Cleaning up the wiring to open up the air-flow path is always a good idea to maximize use of your airflow.

Also: manufacturer dBA ratings are not accurate for our needs. Looking at the tests at Xtremesystems clearly demonstrates this fact.

The Zalman ZM-F3 is sleeve-bearing IIRC.

Do fan controllers exist that can control 4 pin molex fans? My thunderblades get their power from 4 pin molex. :(

My power supply is dead silent, its kinda ironic since most people from newegg reporting its very loud, Same for my video card, i leave it @ 70% fan speed and its quieter than 1 thunderblade fan on.

My wiring is almost dead on perfect, Heres a picture actually. As you can see wiring is not a problem.
 
Do fan controllers exist that can control 4 pin molex fans? My thunderblades get their power from 4 pin molex. :(

My power supply is dead silent, its kinda ironic since most people from newegg reporting its very loud, Same for my video card, i leave it @ 70% fan speed and its quieter than 1 thunderblade fan on.

My wiring is almost dead on perfect, Heres a picture actually. As you can see wiring is not a problem.

Some fan controllers can control Molex conneted fans. If they cant, there are 3pin to Molex adapters available for cheap online, or your local parts shop.

I'd definitely look into getting some quieter fans. Scythe, Nexus, Noctua, and lo-speed Panaflo fans are best. Replace every 12cm fan with a 1200rpm Scythe Slipstream fan, and you won't even need a fan controller, and your rig will be quiet. Well, your case fans won't be the problems I mean.

After that, your PSU fan and VGA fan might be the next noise culprits. After that harddrives. After that... well, when you get to that point, you're looking more into things like sound deadening material and acoustic foam lining the case. Suspending your harddrive in elastic can also do wonders for many drives.
 
I would say take a look at the Scythe Slipstream fans, I don't think the Noctua fans are worth the $10+ price premium, if you are looking for cheap, the Yate Loons are always a good option. Also, don't believe fan ratings, either the sound level is a lie or the CFM is, there are a few exceptions like Delta, Panaflo etc.

But yes, Thermaltake fans are ANYTHING but quiet, and have some of the most fabricated numbers I have ever seen on fans. Don't look at what the manufacture lists for sound level, look at RPM, if you want a quiet fan you need something 1,000rpm or less, and a fan controller never hurt. If you want more on fans go read up at SPCR, allot of good info.
 
Some fan controllers can control Molex conneted fans. If they cant, there are 3pin to Molex adapters available for cheap online, or your local parts shop.

I'd definitely look into getting some quieter fans. Scythe, Nexus, Noctua, and lo-speed Panaflo fans are best. Replace every 12cm fan with a 1200rpm Scythe Slipstream fan, and you won't even need a fan controller, and your rig will be quiet. Well, your case fans won't be the problems I mean.

After that, your PSU fan and VGA fan might be the next noise culprits. After that harddrives. After that... well, when you get to that point, you're looking more into things like sound deadening material and acoustic foam lining the case. Suspending your harddrive in elastic can also do wonders for many drives.

Im looking at some adapters as i type this, im wondering if this will actually work with a fan controller.

Ill go to my local frys and see if they have any slipstreams, and test em out. Naw my psu and gpu are dead silent, like i said, when i turn off 2 of my thunderblades, and all thats running is my typhoons fan, its perfect silent. Which is what im going after.

I would say take a look at the Scythe Slipstream fans, I don't think the Noctua fans are worth the $10+ price premium, if you are looking for cheap, the Yate Loons are always a good option. Also, don't believe fan ratings, either the sound level is a lie or the CFM is, there are a few exceptions like Delta, Panaflo etc.

But yes, Thermaltake fans are ANYTHING but quiet, and have some of the most fabricated numbers I have ever seen on fans. Don't look at what the manufacture lists for sound level, look at RPM, if you want a quiet fan you need something 1,000rpm or less, and a fan controller never hurt. If you want more on fans go read up at SPCR, allot of good info.

Thanks ill check it out
 
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