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

[Marvell1]

But not 100%.  It is technically impossible.

you cannot stop difficult

lol, you guys are killing me please stop , gotta feel bad for that guy though 50% in earnings gone in a day and he did not see it coming bad deal

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[Biodom]

But not 100%.  It is technically impossible.

you cannot stop difficult

All your difficult are belong to us

difficult is inconceivable

[QuintLeo]

also im confused about this guy talking about 1000w ac in not being able to produce 2000w dc out....a typical house uses 10/15a breakers in its rooms. older houses use 10a while newer ones have larger ones. my house has 20a breakers for all the 110v sockets so im one of the lucky ones. at 20a i can push about 2300w dc.

 The BREAKER might be rated at 20 amps,  but most common house 110V SOCKETS are rated at 15 amps (and I believe that applies to BOTH sockets combined on a typical dual-socket outlet).

 Keep in mind that a breaker can have MANY outlets on it.


 Also, breakers derate with heat - if you don't run AC in the room your breaker box is in, it's not uncommon for the breakers to start tripping at a fair bit lower than their RATED capasity - especially if you have any of the "2 circuits on one breaker" type breakers, those things overheat if you look at them funny.

 Last place I was in was running a QO box - the 15 AMP rated 2-in-one-slot breakers on some of my mining circuits were typically tripping at 10 AMPS or so actual draw (appx. 1KW "at the wall" A2 Mega Terminators) if the outside ambient got over 90F (inside in that room ran 4-5 degrees hotter). This was on a breaker RATED for 104F (40C, which is the NORM for every breaker I've ever seen).

 I'm not sure if the actual outlet has to be derated for temperature.
 Wire does derate, but that's already taken into account in the NEMA code wire size guides on a quite conservative basis.

[Cassey]

And lets not forget that code (at least in commercial situations) is that breakers should not be loaded to more than 80% of their capacity on a continuous basis.  So a 20 amp, 110V circuit (typically using 12 gauge wire) should not have more than 1760 watts of continuous load.  Basically one S4/s7/s9 per 20 amp circuit.  That limit is 1320 watts if your running with a 15 amp breaker (and typically 14 gauge wire).  E.g.  Your really pushing your circuits if your running an S9 at over 11.83THs.   Maybe that is why they came out with that box?  So it would, barely, fit on a typical US home circuit?

[steve1965!]

And lets not forget that code (at least in commercial situations) is that breakers should not be loaded to more than 80% of their capacity on a continuous basis.  So a 20 amp, 110V circuit (typically using 12 gauge wire) should not have more than 1760 watts of continuous load.  Basically one S4/s7/s9 per 20 amp circuit.  That limit is 1320 watts if your running with a 15 amp breaker (and typically 14 gauge wire).  E.g.  Your really pushing your circuits if your running an S9 at over 11.83THs.   Maybe that is why they came out with that box?  So it would, barely, fit on a typical US home circuit?

Here is what is at my wall........


https://s32.postimg.org/wtna3hz2t/PIC1.png


Can be run over 1760 you just better make sure you have hospital grade sockets and plugs on your extension cords. also make sure it is 10 gauge or thicker and everything will work fine as you can see been running it for over a week no burnt plugs or anything. I was getting that problem until I upgraded as mentioned above.

I have one S9 running and one S7-"ONE BOARD ONLY".  No fires running for a week works well as long as you upgrade your ac plugs and sockets to hospital grade. standard sockets and plugs will burn up !

[Cassey]

And lets not forget that code (at least in commercial situations) is that breakers should not be loaded to more than 80% of their capacity on a continuous basis.  So a 20 amp, 110V circuit (typically using 12 gauge wire) should not have more than 1760 watts of continuous load.  Basically one S4/s7/s9 per 20 amp circuit.  That limit is 1320 watts if your running with a 15 amp breaker (and typically 14 gauge wire).  E.g.  Your really pushing your circuits if your running an S9 at over 11.83THs.   Maybe that is why they came out with that box?  So it would, barely, fit on a typical US home circuit?

Do you know why are did you read it some were ?

Do the math, look at the specs...  an 11.85Th Batch 6 unit draws 1172W plus 12%, or 1313 watts.  Push that to 12.93Th and the spec is 1275W plus 7% or 1364 watts, over the 1320 safe limit.

[alh]

And lets not forget that code (at least in commercial situations) is that breakers should not be loaded to more than 80% of their capacity on a continuous basis.  So a 20 amp, 110V circuit (typically using 12 gauge wire) should not have more than 1760 watts of continuous load.  Basically one S4/s7/s9 per 20 amp circuit.  That limit is 1320 watts if your running with a 15 amp breaker (and typically 14 gauge wire).  E.g.  Your really pushing your circuits if your running an S9 at over 11.83THs.   Maybe that is why they came out with that box?  So it would, barely, fit on a typical US home circuit?

Do you know why are did you read it some were ?

Do the math, look at the specs...  an 11.85Th Batch 6 unit draws 1172W plus 12%, or 1313 watts.  Push that to 12.93Th and the spec is 1275W plus 7% or 1364 watts, over the 1320 safe limit.

While it is certainly possible that Bitmain produce the  B6 "lower power/hash" S9 to accommodate USA 120V users, my bet its that they have much better yields, and much better working hardware at the lower hashrate. I think the lower power draw is just a side benefit (and not the actual reason). It's quite likely that a Batch6 S9 is a set of blades that don't really make the grade as a Batch7 at 12.93TH. You could look at a Batch6 as a "low grade" Batch7, with a price break to match.

Kinda like the way Intel "speed grades" their various processors.

[Cassey]

Do the math, look at the specs...  an 11.85Th Batch 6 unit draws 1172W plus 12%, or 1313 watts.  Push that to 12.93Th and the spec is 1275W plus 7% or 1364 watts, over the 1320 safe limit.

While it is certainly possible that Bitmain produce the  B6 "lower power/hash" S9 to accommodate USA 120V users, my bet its that they have much better yields, and much better working hardware at the lower hashrate. I think the lower power draw is just a side benefit (and not the actual reason). It's quite likely that a Batch6 S9 is a set of blades that don't really make the grade as a Batch7 at 12.93TH. You could look at a Batch6 as a "low grade" Batch7, with a price break to match.

Kinda like the way Intel "speed grades" their various processors.

Actually, I tend to agree with you.  Suspect the math is just a fluke.

Regarding using "Hospital grade" connectors - your key was in using 10 gauge wire - the standard for 30 amp circuits.  Of course if you use 30 amp wiring with 30 amp connectors and 30 amp breakers you can pull more current than if any of those are 20 amp components...

[steve1965!]

Do the math, look at the specs...  an 11.85Th Batch 6 unit draws 1172W plus 12%, or 1313 watts.  Push that to 12.93Th and the spec is 1275W plus 7% or 1364 watts, over the 1320 safe limit.

While it is certainly possible that Bitmain produce the  B6 "lower power/hash" S9 to accommodate USA 120V users, my bet its that they have much better yields, and much better working hardware at the lower hashrate. I think the lower power draw is just a side benefit (and not the actual reason). It's quite likely that a Batch6 S9 is a set of blades that don't really make the grade as a Batch7 at 12.93TH. You could look at a Batch6 as a "low grade" Batch7, with a price break to match.

Kinda like the way Intel "speed grades" their various processors.

Actually, I tend to agree with you.  Suspect the math is just a fluke.

Regarding using "Hospital grade" connectors - your key was in using 10 gauge wire - the standard for 30 amp circuits.  Of course if you use 30 amp wiring with 30 amp connectors and 30 amp breakers you can pull more current than if any of those are 20 amp components...

I never said they were 30 amp connectors they are 20 amps I should now I put them on and the 10 gauge wire I always like to be on the safe side.

standard sockets that electricians put in are 20 amp sockets or 15 amp depending on the service. these sockets are not made to run 20 amps continually for 24/7 they will burn. Hospital,industrial or commercial grade are they are put through rigorous testing surge current temp the whole nine yards they are built to take it.

Same thing goes for the plugs to. Very expensive though wish I new a link I can get them for cheap.

[elokk]

.....
As far as all the ROI talk goes... if you can't roi then great do not buy a miner. If you want to support the network, then maybe you should consider buying a miner. Some of us spend money to run a full node which does not return any money. It is not always about "getting rich"

 

Ahhhh, If I'm not mistaken, Running a -Full Node- is running the the full bitcoin wallet program 24/7 that is open for both incoming and outgoing connections to keep the blockchain  decentralized and transactions recorded.

Mining - using miners- if for the generation of NEW BITCOINS thus being paid for your serviced to help create bitcoins. Running miners is NOT needed to support or keep the blockchain alive.

That's my understanding, but I may be wrong.

Bitcoin is a proof of work blockchain, so yes the network needs miners

[ZedZedNova]

But not 100%.  It is technically impossible.

you cannot stop difficult

All your difficult are belong to us

difficult is inconceivable

set up us all your coin

[QuintLeo]

20 amp NEMA 5 sockets are NOT standard in U.S. homes and most businesses, though they're more frequently found in shop/industrial type business locations.

 You will find exceptions SOMETIMES in newer homes or homes that have upgraded wiring, used mostly for medium-sized window A/C units and washers, or sometimes in garages/shop areas.

 You'll also find occasional NEMA 6 220v series sockets, usually intended for use with electric driers, electric hot water heaters, or large (most 25,000 BTU and up) window A/C units.

The STANDARD is a NEMA 5-15 dual socket for almost ALL outlets in the large marjority of US homes.



 Most of the power connectors I've seen in the pair of hospitals I've been in this year were GFI NEMA 5-20.

 This is not a "hospital grade" connector as such, GFI is specified for any location that wetness or other higher risk of shock hazards can be found, though that "higher risk" issue is why pretty much all line-powered medical equipment specifies connection to a GCI-equipped circuit and therefore that type of outlet is the norm in most areas of a hospital.



 

[steve1965!]

20 amp NEMA 5 sockets are NOT standard in U.S. homes and most businesses, though they're more frequently found in shop/industrial type business locations.

 You will find exceptions SOMETIMES in newer homes or homes that have upgraded wiring, used mostly for medium-sized window A/C units and washers, or sometimes in garages/shop areas.

 You'll also find occasional NEMA 6 220v series sockets, usually intended for use with electric driers, electric hot water heaters, or large (most 25,000 BTU and up) window A/C units.

The STANDARD is a NEMA 5-15 dual socket for almost ALL outlets in the large marjority of US homes.



 Most of the power connectors I've seen in the pair of hospitals I've been in this year were GFI NEMA 5-20.

 This is not a "hospital grade" connector as such, GFI is specified for any location that wetness or other higher risk of shock hazards can be found, though that "higher risk" issue is why pretty much all line-powered medical equipment specifies connection to a GCI-equipped circuit and therefore that type of outlet is the norm in most areas of a hospital.



 

Must you really.......

Hospital-Grade Requirements in North America



North American NEMA 5-15 gray, black, and clear plugs.
Hospital-Grade Standards Hospital-grade plugs, sockets, and cable mount connectors are subject to special requirements contained in the following standards: Medical equipment standards—UL 60601-1 and CAN/CSA C22.2 no. 21; Power supply cord standards— UL 817 and CAN/CSA C22.2 no. 21; and Attachment plug and receptacle standards—UL 498 and CAN/CSA C22.2 no. 42. The hospital-grade plug diameter conforms to NEMA WD-6 and UL 817 standards: (1) the blades must be solid instead of folded brass, (2) the blades are usually nickel-plated, (3) the plug includes an internal cable retention device or strain relief to prevent any stress to the plug’s internal connections and (4) NEMA plug and receptacle are marked “Hospital-grade” and with a green dot

Which mine are hospital grade "Marked" with the green dot right out of the package. anything else you want to say.

[Contact2015]

Can anybody explain the fact that Bitmain still holds on to the same price as before the halving?

[steve1965!]

Can anybody explain the fact that Bitmain still holds on to the same price as before the halving?

GREED GREED AND MORE GREED. They know they can get away with it because they have no competition as of this post.

 

[Tupsu]

Can anybody explain the fact that Bitmain still holds on to the same price as before the halving?

We are happy to announce the long-awaited release of the Antminer S9. It’s the world’s first commercially available bitcoin miner based on a 16nm process chip and, delivering 0.1J/GHs*, it is currently the most efficient bitcoin miner in existence.
 
If you can not afford it, do not buy it.

[numnutz2009]

Can anybody explain the fact that Bitmain still holds on to the same price as before the halving?

if people stopped buying the damn things the price would be lowered. they r gonna tap every single users pocket until they cant get anymore sales then they will start lowering the price. until then they will keep the prices high because who else is gonna compete with them?? i dont see ne other competition when it comes to public miner sales....do you?

[philipma1957]

Can anybody explain the fact that Bitmain still holds on to the same price as before the halving?

Well if you purchase batch 1 and batch 2  it is good for you.

If you waited until after the ½ ing it is bad for you.

Captain Obvious right?

Yes but I think bitmaintech has a plan here.  The plan is to keep the s-9 at a high price while they fill the data centers they have.  Once they have hashnest   setup to sell the s-9 's we will start to see the price drop.

[AriesIV10]

Can anybody explain the fact that Bitmain still holds on to the same price as before the halving?

Well if you purchase batch 1 and batch 2  it is good for you.

If you waited until after the ½ ing it is bad for you.

Captain Obvious right?

Yes but I think bitmaintech has a plan here.  The plan is to keep the s-9 at a high price while they fill the data centers they have.  Once they have hashnest   setup to sell the s-9 's we will start to see the price drop.

I am holding for 2 weeks to make more orders.  I think there is a stabilization process that needs to occur.  It has not settled in yet.

[HagssFIN]

Batch 6 and batch 7 are sold out, I'm eager to see what is the price for the batch 8