Looking for an equivalent but quieter fan than this.

[Feek]

Any suggestions for a fan that's roughly equivalent in throughput but quieter than the one attached please.

It's a 120X120X25mm fan and I believe it's only two pin as there is no speed control or sensing. I can probably get by with a three pin jobby as I can ignore the speed control.

Any ideas please?

Thanks.

 

[Feek]

Damnit, I attached the wrong file - Should be the correct one now.

 

[Feek]

Thanks.

It's the fan in my Drobo and I've recently moved the Drobo to my office so was just wondering if there's a quieter option. It doesn't ramp up and down in speed at all so yes, I assume it's running at full speed all the time.

I don't understand what the mm/H2O figure is, mm being millimetres but I think of H2O as water which I'm sure can't be right as it's not moist in there.

 

[Feek]

I would try it on 7v on a molex/sata cable and see how it performs.

Not really an option when I have to take the Drobo apart to get to the existing fan.

I'd have said the Noctura looks the best option but that's a four pin fan and I only need power, certainly not any control circuitry.

The Noiseblocker is the quietest, will that pressure thing be an issue? Looking at a picture, it seems to have a three pin connector but then the answer to a question says it comes with a 4 pin PWM so I'm not sure if that's suitable either.

The other one also seems to have a four pin connector.

All I want is a quiet 120mm fan I can stick 12v up and have it spin

 

[Feek]

You can put a 4-pin fan on a 3-pin header and still have relatively reasonable speed control. Have it automated by the motherboard, if needs be.
Thing is, every fan will sound noisy to some degree once it goes over 1,000rpm, as the air moving through your case makes the noise.
These values are all at max speed, though, which might help you decide.

It also depends on the rig itself (layout, internal components, filters and meshes, etc) as to how much noise the airflow generates, which is why fan stats are only a starting point.

It's going in a Drobo, a five bay external drive unit. There is no rig, there is no PC motherboard logic, there is just a fan with a 12v feed, no speed control.

The fan that's in there is running at 2200rpm, there's no control. Whatever I put in place will run at full speed, I just want it to be quieter. I thought four pin fans had to have some control, you can't just chuck 12v up them, is that correct?

 

[Feek]

How hot does your NAS run? Any concerns over temperatures?

The drives can get hot, I don't want to reduce the cooling too much.

If the original fan has a sound level of 34dB then I just want another 12v fan that's quieter, I don't care whether it's running above 2k or not, it just needs to be quieter. The Coolermaster one has less than half the airflow, that's not going to be suitable.

If such a thing doesn't exist then it's not the end of the world, I just hoped there would be something quieter.

/edit - What about a Noctua NF-F12 iPPC 12V, would that do it?

 

[Feek]

Thanks @ttaskmaster
I've got a Drobo 5C (similar construction to the 5N) and from what I've been able to gather, it only has a two pin header for the fan and I'm absolutely sure there's no speed control. I think I did say that a three pin fan will do, and that's why I suggested the Noctua NF-F12 iPPC 12V which, looking back, is the same as the one you mentioned, only it's not PWM.

Whereabouts in the world are you, Feek?

I'm in Essex.

 

[Feek]

Thanks, I'll look at those.

However

Pretty much any fan will work but all of your 2000rpm choices will be loud.

The fan in there now is 2200rpm and has a measured audio level of 34dB(A).
If I fit the Noctua NF-F12 iPPC, it has a speed of 2000rpm and a measured audio level of 29dB(A).

Therefore, it'll be slower and quieter, right?

I don't know about audio but at RF, if I drop the power by 3dB, it goes down by 50%. The difference here is 5dB so surely it'll be significantly quieter?