Topic: Help with my s5 Temps (Read 2032 times)

Well you obviously aren't taking in difficulty, there is no way the difficulty isn't about to explode with the S7 and KNC's gear when it launches. These will not be profitable at 6.5 cents after the halving unless you are using it for heat.

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....

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

 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.

 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).

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!

Here are the results with 1m distance and an (maybe not so accurate) iPhone app:
@12V

@10.8V

@9V


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



@250Mhz @12V


@250 @ 9V with obviously higher temps and 11.1V for the Chains hitting almost 0.486J/Ghash with an S5




An Watercooled S5 is also a good way to get rid of too much heat and noise.

 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?

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 . .

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 !!!

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

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.

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

Hmm, Ill target kaze for my future experiment than.

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

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.

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

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

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

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

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 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.