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Be patient just got back from solar array with setup.  2 units running. had to downclock just a bit.


photos to come.

Looking forward to your review! 

The one to be delivered here today looks like it was picked up late and sat for a while, so it probably won't arrive until Thursday. Tomorrow possible. Darn, and I was hoping to be the first one to post pictures.

we needed to get lower freq

but here are final setting on the 2 running

freq 625
fans at manual 70%

https://i.imgur.com/IzEynux.png ---- full size

https://i.imgur.com/CpL7i39.png ---- full size

both at kano.is

https://i.imgur.com/5JeODP2.png
https://i.imgur.com/E0xvDrO.png


at kano.is
https://i.imgur.com/HBPSTfM.png

I'll leave other to post pics. Got mine today and so far am - happy - with it but...
A. is so far averaging just over 13THs
B. A thermal design issue raises it head with these. The middle card and the one with long finned heatsinks facing the case wall run well over 4.3-.5 THs each. They report chip temps of around 90C. The one with the short fin topsinks facing the case is giving a bit over 3THs and reports the chip temp as banging around 99-100C. The air coming out of that card is also substantially warmer than the other 2. Will measure temps tomorrow sometime.

The root problem is that the short sinks are presenting a much high airflow resistance because the flow channel is restricted by them and the case wall. If somehow move the cards over a smig, hell even 1/8" might do it, then airflow should remarkably improve.

edit: Also, mine wants to be a howler but I found a way to mitigate/highly reduce the siren effect: Put a square piece of open cell foam (air filter kind) over the grill of the intake fan. Suction will hold it fine but a touch of glue/tape whatever wouldn't hurt. Anywho -- it disrupts the airflow just enough that volia' howling gone.

Of course your mileage may vary ;)

yes short term I down clocked from 650 to 625.

But UPS was late.
I had to dissemble the avalon6s from the array.
My sprained ankle from 65 days ago still hurts. ( bitch to be 59 it would have healed in under 10 days when I was 25-30)
The mining gear is in a loft with a ladder.

First time I turned them on I climbed down the ladder knowing they were mining for bitmaintech. So we went to the pc to check them and  setup kano.is

temps were very high   chips in the 90's


https://i.imgur.com/m1A0sZj.png
https://i.imgur.com/PAQIKJL.png


only 2 machines and a large loft  I was supposed to point miners in the direction in this photo
about 70 feet and an up draft fan in the center
https://i.imgur.com/X9nvE8R.jpg

Hmm, wonder if I could fit an English Wheel (metal panel forming tool) through the case to bow out the top-sink side? think think think...

Thanks for the effort and picts, phil.
kano.is IS....

so once I realized miners were blowing hot air at the near wall I spun them around  this allows for okay temps

here they are blowing air  towards the far wall  about 70 ft
https://i.imgur.com/re1pMiP.jpg

here are the avalon6's  I replaced.  you can see the grates below allow cool air to be pulled from below.

pointing the s-9 units towards the far side did get temps okay.

https://i.imgur.com/94eunXX.jpg

I guess with these high temps we can assume that the fans are as loud or even louder than the S7s

loud as the s-7  and I have one unit that squeals like a stuck pig.

I know there is a fix for that if anyone had a squealing s-7 and wants to post the fix please do so.



My guess is we will mine at 600 to 625 with the s-9's until the fall  but no pressure at the moment to decide.

maybe simple box fans will cure all cooling as we only have 2 units with two on the way.

They'll probably run even hotter at the default clockrate. I wouldn't be surprised to see miners breaking down in the summer heat. With these temps, you'd either have to underclock or replace the fans altogether- those temps will shorten the running time dramatically. Disappointed that Bitmain shipped a miner clocked so high that it can't even manage it's default clock speed without high temps. Just more proof that their quality is going downhill fast...

Lol sorry, ninja edited 3 times. Perfectionist :c

at what I paid for these  no oc until sept or oct.  I need to get back some money.

oh I am pretty sure these pull more juice then the s-7 when set to stock.

re-read my post https://bitcointalk.org/index.php?topic=1512186.msg15212835#msg15212835 for the edit about that... The effectiveness varies with fan speed but helped immensely here. Should apply to s7's as well.

I'm confused.  Now they are giving us two temp readings.  In the past, for the S7 and others have we just been seeing the pcb temp (labeled: Temp).
Then why now they showing us the chip temp.  Why is that important now?  Poor design?
My pcb temps are running 56, 56, 59 at 625M.  On any other Antminer I would say there is plenty of room for some over-clocking.  Or in this case to move to the default 650M. (EDIT)
Chip temps are 87, 86, 91.  Are these temps higher than an S7 with the above pcb temps?  In other words is there more of variance on this miner than the older ones.  Where we can burn out a chip before the pcb gets to 80C.  That's still the safety shutdown temp. I believe.
Inquiring minds want to know.

I had an S7 that the fan squealed.  The trick was to move a small piece of paper around the intake fan.  You keep moving it around until the you find the spot that the squeal stops and then you tape it there.  Another solution that worked for a bit was to loosen the screw a little bit.

Do you know what the ambient temps were when you got the screen grabs? 

thank you  I will pick some up at lowes


http://www.lowes.com/pd/Frost-King-13-5-in-x-24-in-x-0-0312-in-Polyurethane-Foam-Air-Conditioner-Filter/3055595

I'd go with the 1/4" thick stuff  which is what I used.

I would think  it was 88f  because it is a loft.

I am not sure the safe chip 0c number ,

I know that

 spondoolies sp20 chips throttle at 125c

intel cpus' throttle at a 72c junction point could be wrong on this

amd gpu's throttle around 93c


but  the readings may not mean much.

the pcb number of 65c should be good
i do not like to see a chip number near 100c
i was near that at 97 c

but the fans are now pointing at the far wall not the close wall
the fans are set at 70% = 4300 rpm
freq dropped to 625 vs stock 650.

here is a screen shot of the two at kanos pool live time 10:10 pm

at freq 625 we are getting 26.82-27.33 th
two units = 4300 usd better safe then sorry ;D
https://i.imgur.com/BdDRhxV.png

Damn that's sweet stuff.  Always fun reading up on the solar array you have going :)

my low tech solution to squealing s7 was to find out that fans screws to machine were over-tightened to the point of deforming fan's case.
i eased up one screw at the time starting from the closest to the point where I saw distortion. Half a turn-and it was OK-no squealing.
On one other machine this only helped a bit (partially), but after a day or two squealing went completely away anyway.
I guess that some part just got grinded or something.

Still confused.

I would agree  very cool to see 2 S9's connected the the array.   I like the loft how does it do with dust out of curiosity?

when the pcb hit 80c it should shut down


There is zero info on chip and what is bad.

kano.is is  26.31th to 27.13 th  at this moment.

thesee two machine at 7th more the the network was when I started in summer of 2012 !

  network was about 20th

Phil do you have overnight numbers for the miner ?

Yes  this is for 2 miners at freq 625 fans on 70%.


almost at 28th  with 625 freq

https://i.imgur.com/0aAK6x7.png


3 blocks so far.  A long way to go for roi

https://i.imgur.com/syJG5Cy.png

PCB temps are useless...just a cheap way to guesstimate what the die temps would be. My guess would be that with more real-estate afforded by 14/16nm it became worth it it put temps sensors on the dies, and the fact that chips at these node levels are more sensitive to high temps. Anything over 90c continuous on die temps will shorten the life of the chip. I would be concerned if they are running over 80c.

if 80c on the chips is bad then the s-9 should be clocked at 575 vs 650 as to go to 79c will not be easy in rooms without ac.

i went to 625 but may indeed go to 600.

mean while i fixed the mad whistle


https://bitcointalk.org/index.php?topic=1493601.msg15223731#msg15223731
https://bitcointalk.org/index.php?topic=1493601.msg15223315#msg15223315

I let mine run overnight at 650M when it's especially cool in the mine.  Even then my die temps were in the upper 80's, with PCB temps in the mid to low 50's.

But when you say anything over 90 will shorten the die's life, are you speaking generally about asic chips?  Or specifically about asics designed to mine crypto?  The reason I ask is that these chips do not need to last 3-4 years.  Even with the S9 being by far the leader right now, I can't imagine it being profitable 18 months from now.
I would not want to keep a miner throttled back 10% below "manufacturer's default" speed just so the chips will last 3-4 years.  I just need them to last about 18 months at the most.  Even that would be the longest life cycle for a miner since asics.  And I want to suck the life out of them for those 18 months.  No sense leaving coin on the table.

Baller alert , you have one of those EGO eclectic mowers how do you like it ?

Really nice :) put them on a colder place.

afaik, chips max temp is 125 deg C then it starts to fail.

well thats for s7 chip though but i'd assume should be the same.

i think other components will fail before asic chip.

like i said, below 75C pcb temp should be pretty safe.

keep it cool ;)

4.2 Recommended Operation Conditions

TOPT Operation Temperature  125 ℃ (MAX)

https://cnshop.bitmain.com/files/download/BM1385_Datasheet_v2.0.pdf

bm1384 & bm 1385 pretty close, same value.

i noticed, pcb temp is roughly 30 deg C lower than chip temp so that can be used as a guesstimate imo.

so the built in 80 deg c cut off (pcb) +30 c (guesstimate) = 110 c on chip so should still be ok.

just my 2 cents.

philip, some screenies pls.

  sorry real world is in the way.

doing a full kitchen reno gutting to the studs.

won't post as much for next 3 weeks.

I take it that the filter doesn't block that much air flow?  I'm going to have to pick some of this up for my S7 that still whistles once in a while.

As long as the filter material has fairly large open cells and you knock the dust off every so often it makes very little if any difference in temps even on my s9.

yes exactly that  the filter is very lite duty.

Looking good Phil.

I would highly suggest taking that PSU out of the cardboard box and using the stock fan packs to make sure it's getting adequate cooling.  I can't imagine the noise of it is a concern out there, especially with 2x S9's howling right beside it. 

yeah you would be correct if I was using it.

I will get to it since I will be using it with the next two s-9's


i am using the dual board 4000 watters pulling  2800 watts ac to do 27th.

Waiting on news for my batch 2 units.

I am  hoping they ship soon.  like tonight vs the 20th.

So far, even having to down clock my b1 (now in my rather warm basement) to 600MHz to keep temps reasonable still liking them and looking forward to my b3.

Now only question is what to do with the s7's I have piling up as I take them off line to stay within my available power budgets.  Got 5x 'spares' so far....  :-\

@ Sidehack - got power available for a couple s7's say directly pointed at your wallet (to pay for the electric) for you to play with optimizing?

I would love to see if an empty s-7 could fit two boards and link four board to the s-9 controller.

or more. There's what, 21 sets of data cable connector pads? ... As I mentioned elsewhere, 2 s9 blades in a reused s7 case should make the thermal issue a moot point...

Save all your firmware.

My batch 1 and batch 2 s-7s were able to do,six units per controller . I never up graded firm ware on them as I,did not want to lose the feature.

Best case is the current s-9 batch one can do the four  boards. And it. An easy fix.

It also cuts down on Ethernet cables as 4 boards to 1 controller means 12 boards need 3 Ethernet conections.

Not four Ethernet connections.

I had a S5+ that had two boards go bad.  I thought hey let me take those two boards out and the air flow should be better.  I was wrong.  For some reason having only one board in the chassis was worse for the cooling.  If I put two boards in there though temperatures for the working board dropped back down to normal.  I don't know what the temp for the second board would've been if it was hashing as well.

Wow nice S9's hopefully the price of them doesn't drop by half in a month or so lol but looks like you made the right gamble with the price of bitcoin skyrocketing.

Well between the S9 delivery yesterday and the price going through the roof again today - In a week's time I have gone from squeaking out earnings of $40/day to just shy of $100 today.  Too bad mining is dead.

Keep in mind on price right now your getting pre-having mining which is a big thing.   It is before block reward so the miners will make more now vs after having.   So a higher price now would make sense.

We have no idea what price will be after having but I would imagine cheaper due to not mining these day's before having, which again is huge to have in my eyes.   I would guess price would reflect after... but how much I have no idea.  But it is a tradeoff as you did not get the pre-having mining if you wait for a lower price.

Agree.  The question is, and what counter acts the theoretical price drop after halving, is demand for coin.  Before the run up the market took in the coins being mined and we have been at somewhat of an equilibrium.  But that same demand for coins in 3 weeks can't be met.

Personally I love the EGO. It's perfect for small areas or if you have less than a half hour of mowing to do. No need for gas. The battery has lasted me 2 years now just starting my third year. The batteries for it cost about $100. I never needed to get an extra battery for longer run time, but I'm sure I'll need to replace it eventually. 

thanks ysl - i am a bit more assured now that 600-625mhz will be safe for now - this unit will transit to a DC so I just want to ensure that this can live in my warehouse for a few weeks.

buysolar just sent  a pm that one unit needed to go to  freq 600  as the temps on it had crept up to

75c and 105c.

 now we got better numbers  65  95

these puppies need fans over 4000 rpm  we are at 70% manual 4100 rpm.

still need to tweak a bit.

the ambient temps are 88f  or say 32c  so this unit may be a 600 freq in the summer then 650 freq once the fall comes.

I am not going to provide AC   so ambient temps in the summer in NJ will be over 95f some of the time.

I can tell this location will be 4 units until the fall comes.

Still we will be pushing 50th at 5000 watts  for June, July, August, Sept.

It is not so bad as we will build up credits for the fall winter with the power company.

I have getting double digit hw errors, at stock 650mhz@13.4TH, with 100% fan to keep the chip temp just below 100c.

I tested lower clocks and 525 mhz seems to have hit the sweet spot, at 11.3TH, 59-64c PCB temps, 88-94c chip temp.

The jet engine sound is also further reduced to bearable level - I have yet to apply the filter hack idea from Philip but I temporary use a pantyhose to filter dust.

Batch 1 S9 / Stock Clock / 100% Fan / 20C Ambient / 20hr runtime:

https://i.imgur.com/nn3S6GPh.png (http://imgur.com/nn3S6GP)

This thread excites me way more than it should...

20c is cold are you in an ac'd it room/data center?

Maybe I will do some clarification here.

1) All previous chips until now are not able to read chip temperature because of missing temperature probe on chip die.
2) temp reading was done through temp probe at PCB, far away enough from chips to get much lower readings.
3) temp of PCB is extremely inacurate because it can't discover poor heatsink contact and chip overheat. PCB temp vs Chip temp accuracy is extremely affected by frequency (total heat generated) and fan speed. Low freq and low fan speed keeps PCB temp closer to chip temps.
4) generally, all chips follow the same temperature characteristic, so if datasheet says it is safe to operate the chip at 125C, it is true, because it is common to all other similar chips.
5) a lot of previous miners (S5 is the winner) suffered from high power density and poor heatsink contact, so there was big number of failed S5 due to overheating
6) knowing chip die temperature is the key to operate chip safely. Keeping the chip within safe margin keeps the chip running virtually indefinitely.
7) since antminer S5, all chips are able to withstand temperatures about 200C under load (under load is very importatnt). It is from my own experience when chips were running and due to overheat they desoldered themselves while soldering temperature is about 200C. Resoldering chips back was enough to fix the board. BTW: My Radeon 5970 GPU was working at 150C without destruction.


TLDR:

So, reading die temperature is the key to operate chips within safe region. Answers to your questions:

1) why so important: let us know key safety information
2) poor design: Yes, until now. With chip temp reading miners wouldn't fail.
3) are S7 temps lower/higher than S9: With the same PCB readings your chip temps will vary about +-10 degrees on both S7 or S9 miners. This is because PCB temperature is far away from chips and it is also cooled by fan. Depends on fan and frequency speeds.
4) OC suggestion: Keep your chips temp below 125C under any circumstances. Lower is better. From my experience chips can work even higher, but PCB componnents are aging and efficiency drops.

Hope it helped also others :)

Now there's an honest to god reply. Thank you sir. You at the very least sound like you know of what you speak. And I like your numbers. Appreciated!

deleted this post does not belong here.


I sold all my dao last week as I had a bad feeling about them.  Sad thing is this is going to hurt  ETH coin.

Just cooler weather here. The last 24hours were 25-27C and the results look the same, other than temps a few degrees higher. Blade 4 accounts for most of the HW errors; it would be nice to be able to clock the blades differently. Dunno if that works with their work generation/collection architecture.


https://i.imgur.com/jt40XtSh.png (http://imgur.com/jt40XtS)
(Batch 1 S9 / DPS-2000BB PSU / 8 Jun Firmware / 650MHz / 100% Fan / 25-27C Ambient / 24hr runtime)

so 13950/14000 =  0.9964   or 0.0036  and your errors are 0.0004  at freq 650

please humor me as you have a really well preforming machine  could you set it at  freq 643.75 vs 650?

I have seen s-7 and s-5 run at 0.0000 error rates with tiny underclock.  If you gear were to do this you may get 13950 hash with 0.0000 and save a tiny bit of power.  other then that your machine seems to be a top notch batch 1 machine.

my bad phil, i posted on wrong group - its should been in our other thread.

anyone using other than the Bitmain's PSU (I recycled one of the S7 Bitmain PSU for the S9)?

I am reading another thread that using a EVGA PSU resulted better stability on the S9.

Granted that every PSU is a different quality (ie GOLD/PLATINUM, etc), power output should be decent enough if it can power up the S7. Are they any other difference?

well the evga platinum 1600p2  = $$ 350-375 usd

the titanium 1600t2 = $$$ 399-425 usd

but I have a suspicion that the bitmaintech psu is not quite good enough to run these units.

I finally found the video!

https://youtu.be/nbQr9NDtIiA (https://youtu.be/nbQr9NDtIiA)

The eVGA units are certainly more expensive, but well worth the 10yr warranty. I had one crap out after two months and they shipped me out a brand new unit, in box with full warranty, in 48hrs. As the video shows, they are demonstrably more efficient than the Bitmain units, and if someone is claiming they are more stable I would not hesitate to make the switch.

philip, in your other post at kano..... 1800w PSU? really? EVGA doesnt have that, so we need to explore the IBM/DELL/HP server ones?

my two use these two of these

http://www.ebay.com/itm/IBM-Delta-Electronics-BladeCenter-DPS-2000BB-A-Power-Supply-39Y7359-24R2710-/222128625016?

 and I can get 13.9th  but since it is in a hotter place  I run a bit too hot and I  downclocked

http://www.ebay.com/itm/IBM-BladeCenter-1800W-Power-Supply-P-N-74P4400-FRU-P-N-74P4401-DPS-1600BB-/252423855278?

I ordered this it can do 147.5 amps at 12.2 volts = 1799.5 watts

it is cheap I have a board the works on the dps-2000bb  maybe it works on this one.
if not I will order a dps-2000bb

with the BM-PSU I recycled from the S7 pushes the S9 to 13.6THs atm.

if your dps-2000bb can push 13.9THs, I think the 0.3THs additional hash may not be cost efficient in my case @ 650mhz

I am going to test a EVGA-G2-1600w next on the S9 and see if it has any difference or improvements.

Edit: I may keep this unit since it doesnt have the wooo sound, and the other units will go straight to the hosted place.

I decided to try o/c first  ;) 656.25 and 662.5 were not promising, but 668.75 has run for 1hr with only 3hw!

Avg. - 14.26

I'll post screen image after ~4 hours. This is with PCB @62/62/64 and die 94/91/97

PSU is DPS-2000BB w/ default voltage. Will be measuring efficiency and trying different input voltages soon.

Do be aware that the DPS2k does not have its own fans... What I did for running 3 s5's off of one is put the PSU about an inch away from the intakes of the miners.:

https://i.imgur.com/cf5IRyB.jpg
Works beautifully. :D
Flippin A... veiwable pic not working so just weblink. sorry.

edit: Speaking of beautiful, while in my Imgur album came across what I did with the Dragon clone A1 rig that Joshua Zipkin of AMT finally sent us lucky few who got anything at all. and sure that pic link works...  ??? Staying with direct link to stay more OT
http://imgur.com/ZRgUk8s.jpg

I wonder if that would alter the s-9 whistle sound?

My next two batch 2's should arrive soon although still not shipped.

Stupid of them to not offer batch 2's a fast track payment  I would have sent them the 200 extra to have them shipped on the 15th and not the 20th well thats 200 they lost.

I bet hundreds of batch 2 payers would have kicked in more money to quicken the batch 2 shipments.

I figure bitmaintech lost 20,000 by not offering that to the batch two purchases.

I hate to be the manager that did not think of that his boss will be annoyed to see all that money left on the table.

Yes, it does alter the sound. I was testing my s9 at work and using one of my DPS to power it. While moving it around I found that changing the airflow at the s9 fan intake changed the pitch/sound. Didn't have to restrict the flow, just change it. Then stuck some foam air filter in front of the fan and no more siren.

That extra money they could have made for a fast-track delivery is why I think something went wonky in their parts supply/production schedules with the line/subcontractor doing the b3's finishing first. Sticking strictly to parts allocation and per-batch tagging of sales led to the flub.

I had two batch twos on order to not offer me the option to send in 200 for fast track was dumb.

I am sure many batch two buyers would have sent in 100 more.

Okay - Here is 14hrs @668.75; Avg. 14.28

https://i.imgur.com/5aKRVath.png (http://imgur.com/5aKRVat)

S9 still running her legs on kano, solo.ckpool and zpool/sha256 via APAC MRR relay.

I manage the pools at MRR portal for ease of use.

I am ok with 13.7THs at stock clock.

Yes, the temps needs a bit more cooling but can someone explain to me the HW errors across all boards?

PSU used is the one that came with S7.

Many have advised me to test using a EVGA-1600w to stabilize the HW errors but I am thinking why?

Is Bitmain's PSU that bad to cause HW errors?

https://i.imgur.com/Sf7yXuz.png

the number of hardware errors means nothing  the % does  0.0019  means 99.81 % are good.

but as  a suggestion clock at 643.75 for a day

I have to tear down and re-vamp my racks here at home (in the living room) here today, and will try hard to get some pics of the rig I put together to manage the heat and noise from the S7s I had here (which are now at or enroute to Labrador). I'm now just running the six S3s in the same package, but I think the method may help some folks. They'd still be here if I hadn't run out of amps (I can manage running six S3s, but not three S7s). From what I'm gathering it might be helpful for someone. ::)

I've never used MRR but I'm curious. Do you just use MRR for pool management, or do you actually rent out your rigs? Maybe you've configured a high profitability requirement so that they're never rented?

I see that you've configured all of your pools to be MRR instances. I'd be concerned if all of the MRR servers went off line, or if they were hit with a denial of service attack. Maybe the last failover pool URL should be a different pool.

You're right.
I use MRR for pool management. The 3rd pool can be pointed to another non-MRR relay pool, ie. SG kano node.
In MRR, you can choose "Unavailable" resulting offline for your rented rigs so that it would not appear in the rigs for rental.
I have run this by kano and -ck, and no issues. Using MRR relay nodes just basically gave me a few more other ways to connect to main kano pool and some ease of management when I swing to other pools like solo.ckpool.org or other SHA256 pools without touching the S9 menus.

Still have heat issues I ordered 2 of these.

http://www.homedepot.com/p/Lasko-Weather-Shield-Select-20-in-3-Speed-Box-Fan-with-Thermostat-B20570/205596323


I will post how these help.  The thermostat looks like a good idea.

Good find.  I could use something like that for one of my rigs with the thermostat rather than having the box fan run 24/7

I had to order 2 to get free shipping.  I think we may need 2 of  them for the four miners any way.

Is this unit suitable for attaching to a window unit?

If yes, can I rig it to use solar power during day and normal power thru outlet during the night?

I think you could. They come on the 23rd will post on it.

I need to find a way to attach some sort of blow (out) fan on the window pix below.

Solar powered and thermostat will be a bonus - plenty of sunshine here.

Unfortunately, I cannot rig/dismantle the windows/frame too much because it's a rented warehouse.

My country standard voltage is 220/240v, so I researched box fans like the one you posted... seems all of them are designed for US 110v power.

Even at Amazon, the power seems limited to 110v only. I will investigate some more on Aliexpress.com

https://i.imgur.com/OLqo0Dp.jpg

Interesting. Your country's standard voltage is 220-ish, but some of the windows across the way have red triangles on them. I would have thought that you're in Japan. They also use red triangles to signal to firemen that those windows are breakable.

My family and I just came back from our second vacation in Japan. It was my fifth trip (the rest were business). We saw enough buildings with red triangles in the windows that I googled it.

Since Japan uses the 110 volt standard, like the US, you can't be there. It's a shame really because that would explain the anime fascination, unless that's just an homage to Kano's shift names.

Anyway, I don't mean to pry. I just thought the red triangle thing was interesting. Hope you figure out a good cooling solution.

Sorry for the OT diversion. Now back to our regularly scheduled S9 programming...

Most modern buildings in Asia have that red triangle - I live in Singapore, so no prize for guessing that Singapore is probably one of the most wired country in the world and is very strict on standards and safety.

The Juvia anime thing is purely homage to Kano's keen interest in anime characters (used in the pool's worker shift page). My first block on Kano pool was on Juvia's shift.... after that rest is history.... juvia luck seems to have followed me ever since  ;D

its easy job, use plywood as base, see the pic below  8)

https://i.imgur.com/uLfBebt.jpg 

Aha!!!

Those big-ass fans, I need to get some from you man - I can pickup from JB.

Do you have exact the dimensions?

It looks quite menacing though, it can suck in a small cat...

the 16" exhaust fan, made in china, >3000cfm, it pull lots of air out, very cheap just cost +- sgd100, i think it available at most JB hardware shop  ;D

or search here http://www.lelong.com.my/swan-gh38-15-industrial-exhaust-fan-etmhsb-168272752-2016-09-Sale-P.htm

thanks buddy for the link, also thanks to almighty Singapore dollar  ;D ;D ;D

i use these to cool down my gpu rigs and i also used them in my big farm when i ran it in a rent house(100 f outside temps probably 120 in the farm itsself due to the large amount of machines i ran).  http://www.ruralking.com/ventamatic-maxxair-20-high-velocity-floor-fan-hvff20.html  these are awesome fans and they are reasonably priced. I did look at the reviews on the site seems its about a toss up  but ive had great experience..   I placed two of these in each bedroom snugly fit into a pc of particle board then i nailed it to the window frame to keep a good seal.  I think i have some picks but the post a couple back is exactly how it looked.  They ran for over a year straight and i never had any issues.> still using them today on eth rigs and i purchased them in june of 2014.

http://imgur.com/m9bh8Rs
http://imgur.com/uBbZEEe
http://imgur.com/Yz1DH4Y

Best Regards
d57heinz

they look pretty good.  thank you

yw

I had a few of those Phil.. They worked great for a bout a month.. the grease oozed out of the motor and locked up.  But i also had a tremendous amount of heat coming from the back of all those machines.  I also had one at my first farm using it as an intake since it was "waterproof" It died aswell after about three months of continuous use.  Make sure you keep an eye on them during your hottest days.   We just had a 96f day with 83% humidity and my rigs kept on humming.  gotta keep em clean tho!  http://www.ruralking.com/ventamatic-maxxair-24-yellow-direct-drive-tilt-fan-bf24tf.html  im using 2 of these stacked one on top of another ported thru the wall.

I have tried a few fan's out the maxair one I had got worked fine and seemed like decent quality but I was not getting the 4000 cfm they mention highend.  I have one http://www.lowes.com/pd/Utilitech-Pro-24-in-2-Speed-High-Velocity-Fan/4755305 had two but one gave out.  Lowes had some kinda policy you could call and get a new moter for X amount of day's from purchase but they were out so I ended up getting refund and bought one bigger as they were out of 24 inch fans at the time http://www.lowes.com/pd/Utilitech-Pro-36-in-2-Speed-High-Velocity-Fan/4755307 .   It really can move some air though.

Between those two I am able to make it through a midwest summer.  My mining area I have the hot air going out a gable fan the one that was installed there did not cut it http://www.homedepot.com/p/QuietCool-Professional-3013-CFM-Power-Gable-Mount-Attic-Fan-AFG-PRO-3-0/206047381 was able to move a lot more air out.   But that setup was close to what made it through last summer for me and is doing good again this summer.

Okay got all four up and running.

put in 1600 cfm fan
https://i.imgur.com/WAb6lyb.jpg

new filter does 4 s-9's  comes from my gutted kitchen  hood vent it was a spare cost = $0

 it can do 6 units

https://i.imgur.com/fbSpE3d.jpg

4k 2x dps-2000 psu j4bberwock/finksy does 2 batch 1's

https://i.imgur.com/WZCLuAI.jpg

optimizer dps-2000 break out board on a dps-1600  psu

https://i.imgur.com/xBoWKBf.jpg
two fans under and a scythe sideways to cool psu
https://i.imgur.com/xAoEmmP.jpg
the sideways fan stays in place via suction but a string holds it incase of power outage
https://i.imgur.com/yxb6tUB.jpg

the sideways fan for the dps 1600 psu
https://i.imgur.com/ZIGezcu.jpg

filter from hood vent of my gutted kitchen it was a new spare so clean and free
https://i.imgur.com/tKi0X61.jpg
suctions hold it in place  but there is a backup string
https://i.imgur.com/Ffqg8p2.jpg

waiting on a part from optimizer  to hook up a dps2500 psu  so using a plat  from evga
https://i.imgur.com/ElSGeNp.jpg


my gutted kitchen

https://i.imgur.com/SvB1gM7.jpg
tossed hood vent we salvaged the led bulbs and the filters
https://i.imgur.com/GARtHT2.jpg


last shot 42th and climbing on kano.is

https://i.imgur.com/wpWEf39.png

Looking good Phil.  You weren't kidding about completely gutting your kitchen!  You should've salvaged the fan from the vent hood to help cool the S9's as well!

do you recommend s9
how much btc you mined so far

Awesome setup Phil -- thanks for posting the pix - learned a few more ideas for my warehouse.

This is the 4 x S9 connected to the solar farm right?

Yes this is,the solar setup.

The fan pulls 1600 cfm.

We finally have temps set.

I think this will boost to 14 x 4 = 56th in the fall.

We are at 51th at the moment.

looking at the size of your barn... you can fill a few more rows of S9s there!

I can only imagine how it's like running on sun power

maybe I should send my gears to you for hosting  ;D

well the power is buysolar the mining gear is mine.

even though we can fit  20 s-9's  and most likely cool them with more fans the array has a power cap.  About 14kwatts for now.

So take 5kwatts away for his home..  we have 9kwatts for gear.   

so s-9's  4 x 1300 = 5.2 kwatts
 1 s-7     1 x 1300 = 1.3 kwatts

total 6.5 kwatts

I will most likley bring my most stable ethcoin setups so 1 more kwatt  that is 7.5 kwatts

Down the road   this is expandable  to 20kwatts  which would be  14-15kwatts for the miners.  To expand he has to pay the power company to upgrade the local transformers and some cables = $$$.      Maybe next summer or the one after.


The solar array is a longterm power source  25 year warranty. 

So heres to hoping mining is here for at least until 2030.

BTC Asics at 16nm like S9 will be probably be around for 1 or 2 more - still good savings already - more hash same power as S7.

For anything GPU, with good progress in 16nm, we should see 480/470s even lower watts for more hash.

Coupled with long term solar strategy like yours, its a miner's dream come true.

You and your missus can surely retire in stlye  ;D

Very nice setup.  im considering to jump on sidehack s7ln.  I have 1 kw of solar running my shed that i dont use daily.. Id like to see how well it can handle running that miner off it.  should keep up no problem and i use sealed lead acid for storage.. Once those die on me tho i will get the grid-tie system as i see that being the way to go forward. I was wondering if your system is grid tie or battery?  also do you know what temp the upper area of that barn is?  Just curious as to how it compares to my setup currently.. very similar:) Also what are you clocking your miners at now and what temps are they running at that speed(s9's).    Thanks in advance ..

Best Regards
d57heinz

 just   did more work on this..  will post more in ½ hour
fan uses 159-160 watts
https://i.imgur.com/FYrkWd8.jpg


second fan  notice the s-7.

we will with up with  5 s-9's and 1 s-7

also notice safety rope on the box fan and on the miners.

 parachute cord.  really strong

https://i.imgur.com/JEaCvrq.jpg

Looking  nice I really like gable fan's personally they do a good job exhausting hot air.  And depending how much hot air you have you can get some pretty nice high CFM gable fan's.

Also looked like you attached the thermostat to the side.  Comes in nice for it to monitor the air heat and only turn on when needed.  My weather varies on temp in Midwest so I love that feature.

First, how I do my filter/siren killers:
https://i.imgur.com/quOYbtJ.png
https://i.imgur.com/iA4iM2K.png

Most of my main Ant colony heat removal. I'm using a 12"  true ventilator blower with flex ducting https://www.globalindustrial.com/p/hvac/fans/blower/portable-ventilation-fan-12-inch-with-16-feet-flexible-ducting to move the heat from the (upstairs) room out to the main production floor.

Gotta say that despite having 18.2kw worth of s7's up there, so far max temps in that area have only hit 85F. Not bad at all.
https://i.imgur.com/abVwc6U.png

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

https://i.imgur.com/BAY4zYh.png

https://i.imgur.com/YKwMMSU.jpg

83 cubic meters/min = 2931.117 CFM
Best thing is that being made for use with ducting CFM does not suffer to much. Cost $190.70 inc shipping.

nice setup!
Is that a big fan blowing toward a stack of miners?
Which model?

home depot lasko with  a thermostat

order 2 and got free shipping

http://www.homedepot.com/p/Lasko-Weather-Shield-Select-20-in-3-Speed-Box-Fan-with-Thermostat-B20570/205596323


Lasko Model # B20570 Internet # 205596323 Store SKU # 1001202865 Weather-Shield Select 20 in. 3-Speed Box Fan with Thermostat

http://www.homedepot.com/catalog/productImages/400/34/34507be4-fd0b-4b18-bd2a-4e26c56fc75b_400.jpg

Phil if I buy an s-9 would you host it for me?

No  we simply  will not have enough power to spare.


Back to photos taken today.
before we added that world famous batch 1 s-7 today. ;D ;D

https://i.imgur.com/aJVw5sJ.jpg

batch 1 s-7 added.
it is shorter and this has sept 2015 firmware  always under-hashed but it can run 6 boards ;D ;D

https://i.imgur.com/InTt2Wy.jpg

closer shot
https://i.imgur.com/eF6qgtU.jpg

all four are set to freq 600 with decent number and temps  it was 81f in NJ today.  the loft felt like 85f next i will bring temp and temp gun
https://i.imgur.com/oSpQBtc.png


same as above screen shot but bigger
https://i.imgur.com/orLWFg2.png

Gotta love how Bitmain made the extruded cases to be able to lock together in a row or in cubes for easy handling :)
On the s7b1, mine has been simple great! It's been OC'd ever since I got it to run at 700MHz and according to Kano holds average of 5.3THs with common Pk of 5.7 to > 6THs. Astounding. I have a b5 running the same. The other s7's seem already near max performance at stock speed and do not take well to OC. Oh well. After I do the Sidehack under-volting/clocking of them won't matter.

my batch 2 s-7  was a demi-god   rated at freq 575  I ran it at 618  and would do 1 hw every 25 days!  51gh at .248 watts a gh on a plat psu.

truly a good machine.


here is a batch 2 s-9  very good numbers.
 stock clock  freq 600 fans at 90%
I think this one is using optimizer's better dps-2000 breakout board on a dps-1600 psu.

the two batch two are close to the same and pull around 10 amps at 240 volts.
 so right about .1 watt per gh.

I am using 4900watts for the 4 s-9's plus 300 for the two fans = 5200 watts  to get very close to  52th.
I may be under .1watts per gh  due to the use of the evga 1600p2 and the evga 1600 t2 at 240 volts.

https://i.imgur.com/vs18ea6.png

Too bad as you look to have a nice setup .

1) okay it is grid tied not battery.

2) it was 81f outside and with two fans it was 85-86f on the loft

3) all four miners are freq 600 all are in the 60-63c pcbs--- 89-93 chip

4 s-9's are doing about 51th at kano we are pulling about 21-22 amps of 240 volt or 5040-5280 watts  plus add in the two fans at 300 watts so 5500 watts and the s-7 is doing another 1300 watts

 so 6800 watts for 56th = .121 watts  a gh with s-7 and fans
and 5500 watts for 51th = .107 watts a gh with only s-9s and fans

I realize the fans are 300 watts and if we wanted a 'perfect'  setup  6x s-9s with  all platinum dps-2500cb psus would work best.

but those psus are not cheap.  I think we are doing okay with this setup.

I need a hot day to know if we are really good.

I also  think a :

  __
 l    l  made of furnace board   over the miners  and the two fans  would cool better and cut sound down.


maybe this product

http://www.homedepot.com/p/UltraTouch-48-in-x-6-ft-Radiant-Barrier-30000-11406/100656748