Help the noise is unbearable

[Alex99]

Does anyone here use a heatsink with the high rpm Delta fans? How the heck can you stand that noise? I currently use a Globalwin Cak-II38 that have one of these delta fans, and it's obnoxiously loud. I ended up removing the delta fan and put in my old wimpy fan from the AMD retail heatsink fan. But then my CPU temp raise by 7 degrees under load!!!! I had to bump the speed down. I had to put the darn fan back on. But now it's very loud and I can't hear my wife approaching when I surf (heh heh) Help! How do I quiet these monstrosity of a fan?

[azhari]

The most obvious answer would be water cooling, but I won't treat you that bad ;)

There are a couple of things you can do. First there is the silicone trick. This means that you put 4 dabs of silicone where the fan screws go so that the fan sits on these dabs instead of screws. Then you put a shroud around the gap so you don't lose any air. You can search the forum for a more detailed descritption.

The second option, which I'm looking into, is sound insulation on the inside of the case. You can buy sound insulating material and cover the inside of your case with it. I've heard that it doesn't heat up the system and quiets it a bit, but haven't tried it yet.

A combination of these two will most likely quiet things down a bit, but I don't think it will get that quiet where you won't hear your wife sneaking up on you :D

[phenolite]

as you can see from my sig, i am using dynomat xtreme. a few things to note:

1. makes case VERY heavy
2. MAY make case a bit warmer (i have noticed minimal heat gain)
3. Do a little at a time...i did the sides first, that helped alot..it is still a bit noisy, but a helluva lot better than before :)

hope this helps

[muddocktor]

You could also change out that 38 cfm Delta fan for a 30 cfm Delta, they aren't nearly as noisy and they don't have that high pitched turbine-like whine. That is what I'm running on the PEP66 on my Intel box. Your temps will only climb 1-2 degrees.

[Arkaine23]

This mod helps out some for my thermaltake Volcano 7 (modded to run at constant 5000 rpm instead of variable speed)... the fan is supposed to be just about as loud as a Delta 38. An article in the heatsink reviews & tips has instructions and pictures. However, make sure you do it right, or removing the fan at a later date will be very difficult.

[Robbie]

Here is something that I did. (not sure if azhari was refering to me) But I went to Wal mart and got a welcome mat (without the welcome) and used it to line the inside of my case.

I have already used rubber o-rings to stand off my very loud fan.


So far both have seem to help out some. I still think I'm going to invest in that Dynamat stuff, as it seems alot more denser.

Here is a pic.

Rob

[Sonny]

Looks like you need a duct:D Cool air from the outside & with a 80mm fan with the same CFM it'll be quiet enought to hear the Mrs. sneeking up on you. A good velocity stack design will get you the performance with no loss of CFM or pressure. Take a look at my solution(pic below);

[Maximus Nickus]

Why not put up with it?? I'm not stupid or anything but were overclocking right? If you weren't then you could use that quiet fan without worries, I don't mind the noise (I Have 3Delta's and over 550CFM going through my case) I have thought about noise reduction but I've got a green cathod shining through the vents and insulation would ruin that.

To be honest its almost a symbol of who you are, OC'ER!!!!!:beer:

[Yodums]

I believe there's such thing called a delta screamer so it takes some noise off.

[javertiz]

I just installed a rheostat last night. Does the job. With it I can "turn" my delta down.... I have lowered it to ~4000RPM (from 7000) and it kills most of the noise (the WHINE!!).
I used a 100Ohm 5W rheostat from the RadioShack.com website. I am thinking of using something else, maybe a 25Ohm or a 50Ohm since the 100 one is too much and if I crank it down too far it will STOP the fan !! Not a good thing!. Makes for a clean design and you can always crank it up when you are done surfing and want to do some app work or gamming !!

BTW Lowering it from 7000rmp to 4000rpm only added 3 to 4 deg C to the CPU !!!

Worth every penny !!.

Im also going to add some to my case fans.... maximum control. Cost is about 2 to 3 dollars each.

Hope this helps,
Alex

[Al666]

Get yourself a Digital Doc 5 and do the auto fan speed mod.

I have two screamin' 56dba 130CFM 12cm Delta fans installed on my BlackIce 2 radiator. After the mod they're running @ full speed (@ 12V) when they're needed (meaning when the CPU reaches a certain, preset temperature), otherwise they're running quiet @ 7V.
You don't need to deal with knobs, switches etc. to make your fan(s) quiet 'cause Digital Doc5 does it for you automatically. All you need to do is wiring a relay switch...

here's the link:

http://www.commongrounds-pc.com/Articles/autobaybus.html

[Alex99]

Thanks for all your advice everyone. I like them all. I think a lot of people will find all your advice helpful, not just me. I've quit a few people suggest modifying the delta to run at lower rpm. Well, I tried that. What I did was moved the power cord from the yellow 12 volt to the red 5 volt. Yes, the fan then runs a lot quieter, but also a lot slower and not any better then my wimpy AMD fan. I'll look into the rheostat and the Digital Doc and so forth. I also like the case insulation suggestions. Maybe I'll try both.

Sonny,
Believe it or not, I did what you suggested. I used to have Abit KT7A mobo. I cut a hole on the side of my case and put a fan there. Then I cut some cardboard to make a tunnel pulling outside air directly onto my CPU/hsf. Works great. I just used the CAK-II38 heatsink and only needed the wimpy AMD fan. Well, I just bought a Shuttle AK31 v3.1 a couple of weeks ago. GUESS WHAT? The damn CPU is not on the same spot as the KT7A, as a result, my "wind tunnel" is now blowing on some capacitors instead of the CPU, DOH!!!

[aznboi64]

Javertiz - Hey what part number at radioshack.com did you get the rheostat. I want to do the same. Sheit this delta fan is crazy shiet. How did you monitor the temp in your computer if the delta fan is plugged into the power supply?

[sifu quoc]

i bought like 5 25watt rheostats from radio shack, box, speaker connectors, silver knobs...

the price, about $5 for the knobs i think, $2 for the box, $8 for the speaker connectors, $15 for the rheostat.... i nver acutally finished yet, cuz finals....

$32, didnt count wires, yet.... digidoc is fifty something.... something to consider....

[Sonny]

Alex99 - LOL!!!!!! I got the fix for your little predicament:D Make a window mod for the side panel of your case with plexiglass/lexan or whatever material you prefer, you can even use an opaque material & use screws to attach it for a more industrial look, & you will be able to change the fan placement whenever you change MoBos. All you need to do is replace the "window".:beer:

Did you try my idea of the Velocity Stack? That particular design will keep the pressure & CFM at a constant, even when you have the exit smaller, plus clean up the airflow. With a 80mm/80CFM Delta:eek: & a potentiometer:cool: to control the fan speed/noise & you can run without a fan directly mounted to your CAKII. When you want to go for more cooling all you need to do is raise the voltage on the pot & VIOLA more cooling/noise.

[javertiz]

Originally posted by aznboi64
Javertiz - Hey what part number at radioshack.com did you get the rheostat. I want to do the same. Sheit this delta fan is crazy shiet. How did you monitor the temp in your computer if the delta fan is plugged into the power supply?

Actually, I bought a 100Ohm rheostat.... go with something like a 50 or even a 25 (not sure the part number for these - its on their website). The 100 is too much and if you turn it too far it will SHUT DOWN YOUR FAN (baaaaaad). So I am getting a 25Ohm and a 50Ohm to test.

I monitored this way. I too a thin wire and put it into the 3 to 4 power adapter in the empty hole (not sure what color). The delta fan has 3 wires, but only 2 (I think black and red) make it to the adapter so I put the thin wire (shielded - like old telephone copper wire) into the 3rd prog to pick up the connection that was "left out" . I then took a small jumper and soldered the other side of the wire to it. I plugged the jumper into the "CORRECT" 3rd pin on the motherboard plug. Make sure it doesn't touch the other two.

Now it gets power from the PSU but the MB can read the speed of the fan.

-Alex

[aznboi64]

Javertiz - Let me know which one works. And how you wired it up. And is this how it looks like http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F010%5F003%5F003%5F000&product%5Fid=271%2D265

And so to monitor the cpu speed you put a 3 plug with only a singe wire connected to it correct?

[javertiz]

This is what you want:
http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F010%5F003%5F003%5F000&product%5Fid=900%2D7966

I'll tell you how it goes..... this one is 5W the one you had linked to was 1.5 or 1.8W... it would FRY in a second and the fan would die !! Make sure its AT LEAST 5W for a delta fan (the delta 38 80mm fans use 6.2 W or so !!! - ours is only 4.4 or so).

-Alex

[aznboi64]

Well I want to use the rheostat on my 60mm delta fan that came with the vantec 62540D. This delta fan is 6800rpm 3.84watt that draws .32amp. Will the rheostat that you mentioned work with this fan? When ever you have the time can you give me a diagram of how you did everything.

[Ploaf]

The glaciator isn't exactly silent either. I never heard a delta, but I don't think that I want to. I have an IBM drive that makes a lot of noise too. anyway.. I didn't measure anything exactly. Just used mbm5 for temp readings and my sanity meter for noise levels.
I bought the regular dynamat from Circuit City (with the car audio installation stuff they have) for about $25 or so.
It seems to have helped. I also lined the case with a cut to fit 1/2" foam insulation board which also helped. Those are usually found in sets of 4 in the hardware store insulation aisle and it's cheap. The foam insulates the case and prevents it from dissipating heat through the metal, but it also decreased the size of the inside of the case and my temps were lower after using it in certain, not all, areas of the case. Maybe it improved air flow. I can't say why or how or if the room was just a little cooler after I did it. It wasn't that scientific.
I saw this combo on the web somewhere, may have been here and it worked well on this end.
Using a 120mm Panaflo fan where I had an 80 before helped cool things off and it's a quieter fan.

[sids666]

Try going to www.quietpc.com - although they are based in England they do ship worldwide:beer: