45 dba. Its worth pointing out that the temps are above what would be considered acceptable, even with a 20C ambient and so these particular fans won't be appropriate for most.

One thing to keep in mind is its just not the temp of the ASICs themselves thats important but the VRM's and if the VRM's dont get enough cooling, those things will light up like fireballs.
That is unless they over engineered the VRM and it runs nice n cool, but on bitcoin mining ASICs thats hardly ever the case, they cheap around any corner they can.

@ bbxx!

What is the decibel level now??

I love winter! 
15 dba
One tube
http://www.rona.ca/images/0082101_L.jpg

and 350M

temps 55 52   

There are plenty of things on that board that require cooling other than the chips themselves. Won't someone please think of the non-chip components?

If anybody is intersted with those fans i can order them and reship for you.

AAB is polish company and i live in poland so it is not a problem for me.

Price will be 30$ for pair shipped
no $ margin for me, just tips

to BitmainWarranty

20cm from miner it is 54dB, 50cm 43 dB
you can sleep near thoose fans no problem

S5 is hashing 40 hours with no issues.

maybe you should consider cooperation with AAB and ship unit with thoose fans ?

Nice link thanks you.

Thanks for the clarification.
Actually Gprime31 is 1 post account so 

Mine, a pair has been running at 70 C low to 76C high for a week, less than 10 HW errors every day.