Like i said in my review, board 1 gets dropped regularly, then get picked back up. But its 10-20% hashrate loss in that given hour if it does. I don't know if its precursor to a bigger problem or what.

this happens with mine as well..
its usually just one hash board and its down long enough to cool it off. Sad

This happens to me in almost all my S5, and my friends too.

Which firm ware from smit are you using the one off nicehash tends to do that on some pools . no idea why i talked with smity one day for a few hours tiring to figure it out . here is a list of all his releases for NH .

http://smit1237.asuscomm.com:8080/s5/

The one off Nice hash does that to me so i don't use it. i use one off the list or link i linked .

Thanks for all the reports from quoted users.

@toptek

I use Bitmain's latest firmware with Fan Control.

Also that graph is rad, i don't have it but that is exactly what happens. Long enough for it to cool down to 38c. My reported temps were under 60c so it doesn't sound like it would be the firmware having a valid reason to power it down.

It does have the 80c firmware protection thing. Which may or not work i have no ideas.

well that firmware from butmains is not that great either might be why . my speeds drop a lot using it so i sty way form it . what happens to me is after two or three days it starts doing that then will become stable at around 900 GH then sty there no mater what i do with that firmware .

I see, that does not happen to me. Do the Firmware you use have the fan control bits from the bitmain firmware?
I'd be up to try it but i don't really want to get the fan blaring back to 3840RPM just yet.

no it doesn't i use two fans per miner , the idea of one fan kind of turns me off plus it a real pain the but the noise from that stock fan i just watch them closely . but everyone that mines any way should have some kind of system set up to watch temps etc with out or with the stock fan or with out or with ther vendors software .

Understandably, i knocked it down to 65dB but its still noticeable through the 80dB at 1feet from the other bigger units. Since it has a higher pitch noise.

What fan do you use? I'm thinking of using the Cougars for the Zeus's and it would probably make the S5 totally silent during winter(Or a pair of SP120). But i'm looking for something quiet but with better cooling capability than the 1 stock fan. Ideally something cheaper than the Noctua F12.

two Noctua F12 should work well i only tried with this http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00 testing it . but some one else on the forums has been using two Noctua F12 for some time now i even saw some one on utube posted a video using two .

my fans atm are http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00 as push and http://www.amazon.com/gp/product/B00A460TK6?psc=1&redirect=true&ref_=oh_aui_detailpage_o09_s00 as pull . but my way depends how cool your room is i don't go over 60 C on any miner at 350 freg . all most no noise at all .

Okay thank you i've at least noted everything and will add it to my options. I just have to quiet out the Zeus first since thats overshadowing everything else. Some other user did it with SP120s and apparently didn't overheat at all.

However i'd be very interested in dB vs cooling potential of your Setup compared to 2 Noctua, since those fans are pretty much in the same price range. I'M guessing your second fan has low CFM but still help the setup since it has high Static pressure?

What do your ambient temp go up with you never topping 60?

I seem to reach that on stock fan at 58% with 32c intake.

Edit; the 140m fans fit on the S5?

the 140m fans fit on the S5? yes they do

What do your ambient temp go up with you never topping 60? can't say i don't sty in the same room as my miner but i can find out . it feels like maybe 79 degrees or a tad higher in the same room as my miners and the rest of the house sty's at 77 to 79 all summer long or cooler depends on how hot it get and how much heat i can stand with or without the miners running . winter is the nice time for me . no air needed and it's nice and cold . remember thu i don't over clock and sty at 350 freg . we have kind of cheap power to atm it's like 0.0855 per kwh cheapest for my area . most my power has been was 395 $ .

Thank you very much for all the info. It seem like you have cooler air than me. However in this Area of Canada, 8 months a year is cool so i can just open the window and GG. For now i have to deal with 30c~ or 86f+.

I am running at 393.75 which is 3c higher than 350. And using some box fan air redirected to help cooling the end.

Maryland here we just keep the air running and pay the bill . over clocking tends to do that

. last thought my power bill would be way less if we didn't need the air all most no lite are on at nite only three rooms in house the get used most of the time all year long the rest of the house is dark etc . we have no kids any more running around wasting power us being old folks .

oyea one other thing i never understand and never will is the fans they use if we can buy cheaper fans that work better with less noise wouldn't they save there to doing the same thing ? .

Its true but i don,t know. The fan they seem to be using is this: http://www.frozencpu.com/products/8147/fan-500/Delta_Mega_Fast_120mm_x_38mm_Fan_-_252_CFM_-_Bare_Lead_PFB1212UHE-F00.html?tl=g36c435s1109

But its possible when they buy a bulk of 10 000 of them they get it for a few $? I don't know. *shrug*

That fan seems to run better i think i have one of those laying around i bought to tire out it's better then the junk on S5 .

cya i need to shut up now .... to much to say about them there ways I'll get of off topic.

Meh its okay. I understand. Thanks for specifying that. I'm surprised then... They really cheaped out with the S5 compared to the other previous units.