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Hello thanks for reading the thread.

I recently got a s5. It was super loud so I replaced the fan with a noctua 3000 rpm fan. However the temps were getting too hot so I reduced the frequency to 300. I also put a hardcover book against the bottom of the s5 and placed it vertically. Any ideas if the book helps or not? I saw other users put covers over the bottom so thats where I got the idea. The main issue is that I live in a desert so the ambient temperature is quite high. Temps are at 69 and 70 at the moment according to the antminer UI. I am going to purchase a normal indoor fan and put it under the s5, hope that helps.

Any ideas?

edit:

When I set the ant miner on a flat surface one board drops to 62 degrees and the other jumps to 71, what is the cause of the 10 degree difference between the boards? anybody else have this happen too?

you need two of those fans not one as push pull by that I mean one on the front that is pushing air in and one on the back pulling air out . it sounds like your using just one, it won't work like that, trust me . i tried it .

or that one very loud stock fan . then with two in that way your temps should drop below 60 C and sty there at 350 . unless you house has no air or way of moving that hot air or cooling it off .

what were your temps with the stock fan ?  forgot to ask .

It sounds like your ambient temp is to much for that RPM of fan.   The S5 just is not a quiet miner.   You can go down even more on freq and it will heat up less.

I would put original fan back on personally and it's loud and warm but it works.

I couldnt stand the stock fan long enough to see how it runs. I am mining in my room so the loudness is an issue. I am going to get heat sinks and put them on the chips. I suppose I will get another fan also.

be care full with the heat sinks per chip i did that and ruin a S5, I didn't even bro getting it replaced, i knew i messed it up. by that I mean make sure those heat Sink just fit on the chip and not over lap or touch any thing. but i would try a fan first it's a safer way to find out . and one other way but try the fan first , re paste the boards. o yea water cool it if you want to go that route .

how did you mess up your s5 with heat sinks? I am new to changing hardware around and I don't want to do the same thing. I thought you just simply put the heat sinks on top of the chips? How can this break the s5?

You already have two major heat sinks on the chips.

If you do not know what to do, then it is better not to do.

I live with my miners too. What I usually do is to reduce the fan to lowest which runs 2400 -2280 rpm when I sleep. I increase them when Im not home or simply when I have headphones on. 2 noctua would sound as much as a stock fun running at 2400 rpm. Im still trying other options, Ill try to put a box fan soon. Gonna try a new setup soon, I'll put a silent but avarage fan to pull while using stock fan at %30.

Btw, some of my miners run at 2400 rpm while I set them to %30 and some run at 2280. Does anyone happen to know why.

1) one set of chips could be better then the other
2) the heat sink may be pasted better
3) the firmware may be different
4) there are different pcb boards you could have two different boards.
5) one psu gives better power then the other thus affecting the temps thus causing the fan to spin faster
6) something else  that I did not think of.

as tup said it's best to be safe they cost enough all ready , but anything that touches any thing that it's not suppose to will short it out .  if that makes sense, so  to big of a  heat sink that may over lap on the board might hit some thing turning it on will short it out  or if you want to take them off and they have good solid tape holding them on might not come of so easy.I know that's how i did it, i had the right heat sinks coming but couldn't wait,which became my lose i put on the wrong size heat sinks etc the rest we know.

It can happen.So i wouldn't do it unless you know for sure just what to do as tup  said and a lot others  will tell you

.which i do now at a lose . and yea all you do is put them on the chips but don't over lap and find out the right way of taking them off .:).

One way to damage is by the heatsinks touching other components and possibly causing a short circuit.

MAJOR POINT: Do NOT just use self-stick thermal pads/tape to attach the heatsinks!!!! Always use a thermal epoxy to make sure they stay where placed. Temperature and gravity WILL make them start sliding off which could/will cause short circuits. Been there, done that with S1's. Within 2 months many sinks had fallen off....

Plus I've also found that moving them around or one place form another place can do it the list can on as to  why and  there might not be a thing wrong either .

I have also replaced the fan and using 2x Scythe Ultra Kaze 3000 now (0.6 amps @ 12V = 7.2 W, 45.9 dB). The specs (CFM and pressure) are slightly better compared to an Noctua NF-F12 industrialPPC-3000 PWM (0.3 amps @ 12V = 3.6W, 43.5 dB). I pimped the top and bottom of my S5 a little to have a better airflow (well I wrapped it so its looking like a coffeebox :D and its more like a tube now). I've also added a Fanmate to control the fanspeed.

So far my temps are good (always below 60°C with a little downclocking). I try not to hit 55°C and Chain 1 is always a bit hotter (4-8°C). I also bought an Delta 1212EHE-F00, which looks quite like the original (59dB, 190CFM, 2.0A) - I never used it, its a spare part.

Edit: Remember dB is a log, so +10 dB doubles the noise.

you should put the stock fan back on, that noctua fan isnt going to cut it IMO.. unless you have two

Yep, go for 2 of them and try to stay below 60°C. Afaik Bitmain recommended it so.

Whats your dB from a meter away with 2x Scythe Ultra Kaze?

my best results were 2 deltas I could lower sound from 72db to 53db  and I ran the deltas at 9 volts.    plus i completely avoided  the problem of it the net goes down the  s-5's can burn.

I used this as a fan controller

http://www.amazon.com/DROK-Regulator-Converter-Transformers-Adjustable/dp/B00C4QVTNU/ref=sr_1_1?ie=UTF8&qid=1440623991&sr=8-1&keywords=drok+buck+converter

runs up to 4 deltas at 9 volts

 I used  the same psu that powered the s-5's  to power this fan controller

Sorry, I can't measure that, but I think those 45.9 dB are 1 meter away. So add a little bit more (turbulent air trough the heatsink fins and the fan mesh). But noise levels are much better now.

Hmm, Ill target kaze for my future experiment than.

FYI, if you have an android phone (or iphone) there are apps that measures dB. ;)

70's are too high.  many get away with low 60's

I would agree if you are hitting 70's you are running it wrong.  Put factory fan on temporary to go back to normal.   Or you can shutdown like you did.

The fact honestly is the S5 was not made to be a quiet unit.  Some have modded it, but from factory they are not quiet or cool.  They run hot and loud.

Dang I just bought these and am waiting for them to ship http://www.ebay.com/itm/121331886591?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

So you are saying they could break my miner? good lookin out.

So I should remove the tape and go with thermal paste or thermal adhesive? sorry for being noob LOL

http://www.ebay.com/itm/261474050126?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT





These just fit all the chips i didn't link it , i was hoping you would take our advice and go the safe way first . :) .



I'm not to sure about those never bought them . the ones you linked. never had any issue with any S1 i ever bought .


yes remove the tape, once you glue them on there there  to stay.



This is the best thermal epoxy Ive ever used http://www.arcticsilver.com/arctic_silver_thermal_adhesive.htm  there maybe better ...

Paste won't hold them on long it has to be thermal epoxy :) !!!

this what all my S5 use

http://www.amazon.com/gp/product/B004Y1HLA8?psc=1&redirect=true&ref_=oh_aui_detailpage_o09_s00 this one as push in the front

http://www.amazon.com/gp/product/B00A460TK6?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00 as pull in the back

all credit goes to philp for this idea it worked for me i never have a S5 go over 60 C at  350 speed . :) . my house stays at 80 or cooler all year long, in the room my miner are in it may go up to 85 degrees the hotted part of the day due to them in the summer, i live in Maryland USA,  they still sty below 60 or at 60 C  :) .!! and i could sleep in the same room if it  wasn't for heat, the noise level is very low .


I panic any time they get to close to 60 C .


 The air is off right now in the house so that's tad warmer then i normally see it this time of nite . :) .

https://i.imgur.com/lnVK6ZR.png

 Under 60c for longevity, as low as you can get them for max longevity.

 Have you tried mounting a folded-up blanket (or a large bathtowel etc.) between the S5 and the rest of the room to muffle the noise?

Here are the results with 1m distance and an (maybe not so accurate) iPhone app:
@12V
http://fs2.directupload.net/images/150827/temp/bwh8o5zj.png (http://www.directupload.net/file/d/4092/bwh8o5zj_png.htm)
@10.8V
http://fs1.directupload.net/images/150827/temp/94hefnyu.png (http://www.directupload.net/file/d/4092/94hefnyu_png.htm)
@9V
http://fs1.directupload.net/images/150827/temp/syqi9b3n.png (http://www.directupload.net/file/d/4092/syqi9b3n_png.htm)

Also important are temps with 25°C ambient (77F):

I got 325Mhz @ 59°C (within 2 hours) with an HP G5 Server PSU @0.55j/GHash
https://i.imgur.com/sVyLTb7t.jpg (http://imgur.com/sVyLTb7)
https://i.imgur.com/1Tfema4t.jpg (http://imgur.com/1Tfema4)

@250Mhz @12V
https://i.imgur.com/76jMYR9t.jpg (http://imgur.com/76jMYR9)

@250 @ 9V with obviously higher temps and 11.1V for the Chains hitting almost 0.486J/Ghash with an S5
https://i.imgur.com/L13aQXVt.jpg (http://imgur.com/L13aQXV)
https://i.imgur.com/kyVARKFt.jpg (http://imgur.com/kyVARKF)


An Watercooled S5 (https://bitcointalk.org/index.php?topic=914354.0) is also a good way to get rid of too much heat and noise.

I'd remove the tape and use thermal epoxy. Paste has pretty much zero holding power and is just a gap filler.
Damn good link on those mini sinks!

 Depends on your electric cost. Even after halfing my current estimates are that my S5s will continue to be profitable at 6.5 cents/KWH - though not much profit and not for long. If you have 3 cent electric, perhaps 2 years - even if the difficulty keeps increasing at the recent rate of increase (this I expect to keep dropping long-term, and I figure the halfing will quickly kill a LOT of mid-to-high price electric mining efforts with older gear).

 150 cfm Delta is doing most of the work - not THAT much less airflow than the 190cfm stock S5 delta. I'd guess JUST replacing the stock fan with that 150cfm unit would increase your hash board temps 2 degrees C or so with no other change.


 
 S7s appear to already be in use in Hashnest, per all indications that's what Bitmain replaced their Hashnest S5s with (you know, the "used" ones they sold for a month or so?).

 KnC claimed to have their Solar stuff "in production" months ago - didn't they announce tapeout EARLY this year?

 One thing about difficulty - the faster it increases, the faster old inefficient miners get dropped, which will limit the rate of increase at least some. I won't be supprised to see the average kick up into the 2-3% range, vs. the 1.6% it was averaging for this year prior to the "used S5 sale", but I do NOT expect to see 5% figures ever again except as a one-shot followed by a MUCH smaller jump on the next increase - and possibly not even then.

 Do keep in mind that if the "best gear on the market" isn't profitable for someone they'll tend to turn it off - which is a MAJOR limit on how fast difficulty can climb. When the S7 is unprofitable at 10 cents a KWH lots of folks are going to be turning them off.
 Even some of the major FARMS pay more than 6.5 cents / KWH (I only get 6.7 (I refigured it this week based on my CURRENT electric bill and "additional charges") as an "incrimental" cost past a certain number of KWH during the non-summer months).

 Also do keep in mind just how MUCH existing hardware is already hashing. It takes a LOT more to "make difficulty explode" now than it did even a year ago.

That is true and also the reason why I joined into mining a few months ago.

And at the announced price for the S7, it's debateable if it's really a "home miner" any more. The dual Deltas aren't going to be quiet either....