Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order

[soyab0007]

I am planning for 2 x S9 purchase

just having a doubt, few are saying that mining wont be profitable after halving

Is it true?

Most profit depends on your expenses. Like your electricity cost? Are you running it in your house, if so its going to be hot and you may need more cooling, etc etc. But I still think its profitable. I just purchased my first S9 and plan to get more soon. The efficiency is there and I am in a good spot for electricity.

Does AC is required for more cooling or table fan would be enough for 2 x S9?

Planning to run it for 24x7

how much temp does it reach when we run it for 24x7?

[Erumara]

I am planning for 2 x S9 purchase

just having a doubt, few are saying that mining wont be profitable after halving

Is it true?

Most profit depends on your expenses. Like your electricity cost? Are you running it in your house, if so its going to be hot and you may need more cooling, etc etc. But I still think its profitable. I just purchased my first S9 and plan to get more soon. The efficiency is there and I am in a good spot for electricity.

Does AC is required for more cooling or table fan would be enough for 2 x S9?

Planning to run it for 24x7

how much temp does it reach when we run it for 24x7?

It will put out roughly 200cfm of 50-60 degree air, operating at room temperature, basically a 1200w fan-driven space heater that sounds like a vacuum cleaner lol.

[drazah]

Only a fool pays full price at 2+ BTC for the next batch, with halving in the next 5 days. Bitmain will have to drop S9 price by 50% right after the halving. But stupidity and greedy go hand in hand.

this is hilarious if you actually think this is true

[philipma1957]

Only a fool pays full price at 2+ BTC for the next batch, with halving in the next 5 days. Bitmain will have to drop S9 price by 50% right after the halving. But stupidity and greedy go hand in hand.

this is hilarious if you actually think this is true

I see a wager.

Bitmaintech drops price by 50%   in 10 days or less from the ½ ing.


Price based in usd fiat not btc.


Batch 5 is 1853.27 usd as of right now.


So it would need be 926.63 usd 10 days after the ½ ing.


BTC is weird not very sane .   So I guess it could happen.




but maybe not.

[sidehack]

I'd bet we don't see the price below $1000 before September.

[yslyung]

B5 greyed out, just shipped out paid last week.

[philipma1957]

B5 greyed out, just shipped out paid last week.

Well should be fun to see what happen's next  we are under 600 blocks to ½ ing

[AriesIV10]

B5 greyed out, just shipped out paid last week.

I have 1 Batch 5 Order for delivery on Wednesday and 1 Batch 5 Order for delivery on Thursday. 

[Finksy]

Buyer beware, I would stay away from Bitmain's gear unless you want it to look like this:



https://bitcointalk.org/index.php?topic=1540037.0

[Cassey]

I've not had that extreme of a problem, but I have noticed a few of my power connectors have a slightly burnt look to them.  Rather concerned about that.

[drazah]

Looks like a freak accident to me, Are you going to sell off all of your BITMAIN gear now?

[Cassey]

My Batch 5s arrived today.  Setup without problems.  However... they are screaming at me!  My batch 1 did this until I removed the front grill, then it was actually quieter than my S7s, but I can't seem to get the B5s to stop screaming.

Going to try forcing fan speeds next and see if I can hit a different resonances.

Oh thank god... the vent filter trick did the job.  Don't know if that is due to the fans speeding up to compensate or what, don't care.

Still a minor whine, but nothing like it was.

[steve1965!]

Buyer beware, I would stay away from Bitmain's gear unless you want it to look like this:

https://ip.bitcointalk.org/?u=http%3A%2F%2Fi64.tinypic.com%2F2ihwb3a.jpg&t=566&c=YAzS4Bn7oADEiA

https://bitcointalk.org/index.php?topic=1540037.0

inadequate AC WALL power being sent to the power supply that is why this happens. or loose connectors but if everything it tight then its WALL!

[sidehack]

How exactly do AC source limits cause a problem at the DC load? Seems more likely inadequate AC wall power sent to the PSU would cause an issue with the PSU, either in drawing too much current from mains to supply the DC load requirement or simply turning off.

Also, I think his complaint is as much "Bitmain will deny warranty for anything they build which burns down your house due to poor manufacturing" as much as "Bitmain manufactures things that will burn down your house". Accidents happen and sometimes electronics fail, but that's kinda exactly what warranties are for.

[ConnerM]

Hey everyone.

I have a Batch 4 S9 (I have 8 S9 units running from batch 3 and 4) that arrived on Friday and ran all weekend perfectly until this morning. Seems an entire blade is down.

Chain 1 and 4 are hashing fine, together at about 8,600, but chain 3 shows all 0's but is not hashing at all.

I have tried multiple hard and soft reboots, resetting the frequency to 575 and 550, and finally I swapped out the EVGA 1600 PSU with my spare 1600 PSU unit new out of the box and nothing seems to want to make that board come back up. Is there anything else I should try before I report a defective board to BitMain under warranty?

Thanks!

Bob

[Finksy]

How exactly do AC source limits cause a problem at the DC load? Seems more likely inadequate AC wall power sent to the PSU would cause an issue with the PSU, either in drawing too much current from mains to supply the DC load requirement or simply turning off.

Also, I think his complaint is as much "Bitmain will deny warranty for anything they build which burns down your house due to poor manufacturing" as much as "Bitmain manufactures things that will burn down your house". Accidents happen and sometimes electronics fail, but that's kinda exactly what warranties are supposed to be for.

Fixed that for you, otherwise spot on as usual.

As to the comment about AC wall voltage, read my case again and you will see that A) I had 9x S7's and 12x S5's hosted using the same AC power and B) that specific 4000W PSU was powering 1 other S7's and an S5, neither of which suffered from spontaneous self-combustion.

And loose connections? Like, all of them? Lol...

[JaredKaragen]

Hey everyone.

I have a Batch 4 S9 (I have 8 S9 units running from batch 3 and 4) that arrived on Friday and ran all weekend perfectly until this morning. Seems an entire blade is down.

Chain 1 and 4 are hashing fine, together at about 8,600, but chain 3 shows all 0's but is not hashing at all.

I have tried multiple hard and soft reboots, resetting the frequency to 575 and 550, and finally I swapped out the EVGA 1600 PSU with my spare 1600 PSU unit new out of the box and nothing seems to want to make that board come back up. Is there anything else I should try before I report a defective board to BitMain under warranty?

Thanks!

Bob

I know its probably a tier one comment, but I have to ask:

What is line voltage at the back of the wall plug on your units when running full throttle with all gear?
Ive ran into issues with hardware frying because line voltage dropped below 100....   And I had PLENTY of overhead as far as supply wiring and such... it was a failing generator.

But.. it sounds like the hashboard has a failure of some sort.   No physical signs of burning/darkening anywhere?

It's kinda known the BM's warranty is like taking a BM.... drop it in the toilet and flush that garbage away if you expect things to happen 'right now' a failure happens.  Its always a gamble with new products with them; who knows if it will be good out of the box, or else you will need to be without it for usually weeks to a month or more... If they were a product in a store;  that would be different.  Sadly, its their strategy to protect their ass from incompetent people or ones whom dont provide what it needs to operate correctly..

[Soros Shorts]

And loose connections? Like, all of them? Lol...

It takes one loose connector. Current initially flows through the other two until they burn out and their resistance increases above that of the first loose connector. Then the loose connector starts taking the load and it quickly burns out too. It happened to me more than once with Bitfury gear.

[Finksy]

And loose connections? Like, all of them? Lol...

It takes one loose connector. Current initially flows through the other two until they burn out and their resistance increases above that of the first loose connector. Then the loose connector starts taking the load and it quickly burns out too. It happened to me more than once with Bitfury gear.

That might be accurate for some miners, but in the case of the S7's they have 3x PCIe connectors per blade (which I was using all 9 + 1 for the controller board) and each blade was drawing 375W DC (125W per PCIe jack) according to B1 specs.  Even if 1 of the PCIe connectors completely lost connection, that would split the load up between the other 2 and resulting DC load would still only be 187.5W per PCIe connector, or 5.2A per 16awg 12V+ circuit.  Well within the spec and capability of these cables, both in theory/rating and in practice.  

Therefore, unless 2 full PCIe connectors from each of the 3 blades developed loose connections simultaneously, I don't see this as a possibility.  Also, looking at the burnt PCIe jacks/cables, none appeared to have been under more thermal load than the others when comparing eachother within a blade.  

The fact that the boards appear to have melted from the middle outwards, suggests to me that it may have been some kind of controller-related failure causing all of them to over-heat and burn, similar to an internet shortage.  One would think that if there was a fan failure or something else non-controller-related that caused the temperature of the chips to rise to that critical of a temperature, the over-temperature would have kicked in and shut the miner down.  Unfortunately I have no information on any of that, and was told to send the controller along with the boards to Bitmain.  They did not give me any explanation other than "Sorry ,burnt board are not cover in warranty ."

More pictures and details in this thread: https://bitcointalk.org/index.php?topic=1540037.0

[alh]

Hey everyone.

I have a Batch 4 S9 (I have 8 S9 units running from batch 3 and 4) that arrived on Friday and ran all weekend perfectly until this morning. Seems an entire blade is down.

Chain 1 and 4 are hashing fine, together at about 8,600, but chain 3 shows all 0's but is not hashing at all.

I have tried multiple hard and soft reboots, resetting the frequency to 575 and 550, and finally I swapped out the EVGA 1600 PSU with my spare 1600 PSU unit new out of the box and nothing seems to want to make that board come back up. Is there anything else I should try before I report a defective board to BitMain under warranty?

Thanks!

Bob

You might want to consider swapping the data cables around and see if you possibly have a bad data port on the controller. While I haven't heard much about that class of problem (i.e. data port/cable), it's possible for them to happen. You might also want to try swapping the PCIe power cables between boards, although the PSU swap should have covered that.

What chains do you have identify on the display? You have mentioned Chain 1 & 4. What's the third one called? Do your identifiers match something on the control board? Do you get any readings (e.g. temp) from the 3rd board?

None of what I have said makes much sense if it was working OK, and then just quit.

Just something to consider......