Quote from: DebitMe on February 13, 2015, 03:54:37 PM

Quote from: MrTeal on February 13, 2015, 03:51:01 PM

Quote from: DebitMe on February 13, 2015, 03:46:44 PM

Quote from: MrTeal on February 13, 2015, 03:31:57 PM

Quote from: DebitMe on February 13, 2015, 03:19:02 PM

I read back a few pages looking for information about changing the fans on the S5's but was unable to find any information so I am starting the discussion over.

I received my 2 S5's yesterday and my parents promptly said "no" to the noise going on in the backroom from them. So now I need to replace the fans and my thinking was just to put 2 of them on either end like the S3 and call it good. I noticed on the controller for the S5, there are 2 4 pin slots so I figure this should be fine, but wanted to double check. I am thinking of running out and getting these today...
http://www.microcenter.com/product/423765/Air_Series_AF120_LED_Red_Quiet_Edition_Twin_Pack
and putting one on either end of each S5, but they are 3 pin connectors, should that be fine or should I find ones with 4 pin connectors (I thought 3 pin can plug into 4 pin slots?) Also the airflow is 52.19 CFM, should that be sufficient to cool an S5?

Thanks in advance, I appreciate all feedback

They should run fine with two of those fans using the 3 pin connector, but you won't have speed control. Depending on your ambient you might have to throttle down the speed quite a bit to keep the miner cool.

That was my thoughts on the 3 pin connector. Thanks for affirming.

Forgive me for not understanding, but you say "throttle down" the speed to keep it cool, wouldn't throttle down refer to slowing the fan speeds, and raising the temp of the miner? My ambient temperature isn't high, and they are in a very large space to dissipate the heat, so I am not too worried about that being a factor, just confused on what you mean.

Thanks for the feedback though.

Sorry, I meant turn down the frequency of the miner. There's no provision for voltage control with the S5, so power use scales pretty linearly with frequency. Those quiet 52CFM fans probably won't be able to dissipate 500W even running full out without the temps going nuts, so you might have to turn down the frequency significantly to keep everything from getting too hot.

Ahh that makes more sense, thank you, guess I will look for some fans with better airflow that are quieter.

Thinking this one now...
http://www.microcenter.com/product/405571/NF-F12_PWM_120mm_Case_Fan
That should be plenty to have 2 of those per S5

not necessarily enough as that fan produces just 93CFM.
I used NF-12 3000rpm Noctua fans at ~110CFM ($24.6) and they only allow for ~325/1070 Gh at safe 60C when used alone in push position.
Added scythe ultra kaze (not PWM, ~$13) for pull and 337.5/1100Gh is possible at 60C, maybe even full speed if you have lower than 30C ambient
ultra kaze somehow did not work for push.
The whole setup is ~55-56dB, which is much better than default (more than 72dB).
if you need screws for connecting pull fan, then go to metric screws section at Lowes and get M4.-0.7 (45 mm-will allow for grill).
these fit very nicely.
I am really looking for quiet fans and next on my agenda are delta AFB1212SH (25X120X120mm). these supposed to produce just 46dB with 113CFM-I will believe it when I use them. Unfortunately, they are available only for slow ship from europe or china on ebay or amazon.