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

[tmfp]

Hey tharani, if you want to know how much your S9 will cost to mine how much, use http://www.coinwarz.com/calculators/bitcoin-mining-calculator , fill in the relevant values of your miner, plus your electricity cost (iirc, Delhi, for example, is about $0.06 per KwH for a medium size user) and you will get your answer.

[tharani]

For single phase 1 kw as 6.25 amps and power factor 0.9 it is 177 volts daily not bad.

Why i must read those law's , you guys are always there to help me out and do the math lol

so 177 volts a day is not bad unless in 4 days it consumes 2 months of my eb bill rofl .

[NotFuzzyWarm]

For single phase 1 kw as 6.25 amps and power factor 0.9 it is 177 volts daily not bad.

Why i must read those law's , you guys are always there to help me out and do the math lol

so 177 volts a day is not bad unless in 4 days it consumes 2 months of my eb bill rofl .

You should read up to learn.
Cuts down on folks wanting to give a smack upside the head....

[tharani]

For single phase 1 kw as 6.25 amps and power factor 0.9 it is 177 volts daily not bad.

Why i must read those law's , you guys are always there to help me out and do the math lol

so 177 volts a day is not bad unless in 4 days it consumes 2 months of my eb bill rofl .

You should read up to learn.
Cuts down on folks wanting to give a smack upside the head....

i'll try the last time i tried it wasn't much profitable trust me .

lol!!!!

read an entire harry potter series in a week yes !!!!

read some physics and maths omg no thanks !!!

[IconFirm]

... DC does not travel well over distance ...

Your statement is simply not true.

Yes, it is.

DC installations are very expensive, which is one reason why they don't really get used below transmission voltage level.  A DC substation requires more equipment than an AC substation would require, partially becuase the conversion process requires equipment that will eliminate harmonics that are created. This is very inefficient for subtransmission and tranmission voltages below 500kV (500,000V).

We are talking about residential 240V AC power & not 500KV of power transfer.

Anyway, it's got boring now.......

[philipma1957]

For single phase 1 kw as 6.25 amps and power factor 0.9 it is 177 volts daily not bad.

Why i must read those law's , you guys are always there to help me out and do the math lol

so 177 volts a day is not bad unless in 4 days it consumes 2 months of my eb bill rofl .

You should read up to learn.
Cuts down on folks wanting to give a smack upside the head....

You made me laugh.  Thanks

[tmfp]

Risking a smack, Bitmain's spec for the APW3-12-1600 PSU specifies output at

DC Voltage
12V
Rated Current
133A
Rated Power
1600W

If there is a DC supply capable of providing that, why can someone not just go DC/DC direct connection?
i.e. battery/solar power without the conversion to AC and back again to DC thru a PSU?
Just asking...

[NotFuzzyWarm]

Risking a smack, Bitmain's spec for the APW3-12-1600 PSU specifies output at

DC Voltage
12V
Rated Current
133A
Rated Power
1600W

If there is a DC supply capable of providing that, why can someone not just go DC/DC direct connection?
i.e. battery/solar power without the conversion to AC and back again to DC thru a PSU?
Just asking...

That is done all the time with telecom equipment.
The only trick is to match the DC feed to what your buck regulators want to see. In fact many data centers are now using a high DC feed (typically around 380vdc) to the racks and then chop that down to what the servers need.

Technically, you could bypass the AC input rectifiers and just feed the DC to the primary side filter capacitors...
Of course, as always: IF YOU PLAY WITH LINE POWER SIDE OF A PSU -- KNOW WHAT YOU ARE DOING OR YA MIGHT GET KILLED.....

[Tupsu]

...

Also i am asking you guys to tell how much a antminer s9 is gonna produce in a day.

Today  PPS TH/s Earnings   is 0.00115679 BTC for 1 TH/s

S9 11,8TH/s
11,8 x 0.00115679 =0,01365 BTC per day (today)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

what is the power factor.

if you got a power factor we can come up with a approximate value

also without power factor the voltage results would be in infinity also you mentioned a watt value and not a kilowatt value

1300W in hour

24 hours x 1,3 kw =31,2 kW/h

[sidehack]

At the risk of seeming unnecessarily pendantic, but for the sake of correctness:

Now comes where the confusions seems to be: The amount of WORK the volts and amps together produce. The unit for that is Watts or Joules and has a simple formula. Watts = Volts x Amps and the rate of use is Watts/time

Everywhere except apparently India the electric bill of all consumers be they residential or industrial is based on Watts  - from an AC source - consumed.

Watts are the amount of work; Joules are energy. Work is energy per unit time. The electric bill is actually based on energy; you are billed in accumulated kilowatt-hours (equivalent to 1 kilowatt draw [at 240VAC, about 4.17A] for one hour), which since watt = (joules / time), watt-hours = watts * time = (joules / time) * time = joules. I'm not entirely sure what to make of "the rate of use is Watts/time".

1300W in hour

24 hours x 1,3 kw =31,2 kW/h

24 hours * 1.3KW = 31.2KWh -> there is no unit division, but unit multiplication. The proper unit is kilowatt-hours, not kilowatts per hour.

[NotFuzzyWarm]

At the risk of seeming unnecessarily pendantic, but for the sake of correctness:

Now comes where the confusions seems to be: The amount of WORK the volts and amps together produce. The unit for that is Watts or Joules and has a simple formula. Watts = Volts x Amps and the rate of use is Watts/time

Everywhere except apparently India the electric bill of all consumers be they residential or industrial is based on Watts  - from an AC source - consumed.

Watts are the amount of work; Joules are energy. Work is energy per unit time. The electric bill is actually based on energy; you are billed in accumulated kilowatt-hours (equivalent to 1 kilowatt draw [at 240VAC, about 4.17A] for one hour), which since watt = (joules / time), watt-hours = watts * time = (joules / time) * time = joules. I'm not entirely sure what to make of "the rate of use is Watts/time".

1300W in hour

24 hours x 1,3 kw =31,2 kW/h

24 hours * 1.3KW = 31.2KWh -> there is no unit division, but unit multiplication. The proper unit is kilowatt-hours, not kilowatts per hour.

Absolutely correct.
I probably should not have included Joules in the discussions because as you said, Joules are the amount of energy independent of time and it's relation to Watts is Watt-seconds eg 1 Joule = 1 watt for 1 second. Play with watts over time and Joules stay the same as in 10watts for 0.1sec still = 1 Joule.

What is fun on my end is how that equation plugs into ultra-fast lasers: eg a 1pico-sec pulse delivering 85uJ translates to a peak power of 85MW. Things get rather weird when hit with power like that...

The "the rate of use is Watts/time" was applying Watts to to Watt-hours and should have been Watts x Time

[sidehack]

I was also thinking about awesome lasers a bit, but I only know the classroom math there instead of actually playing with them on a daily basis; be assured I am darn jealous.

One KWh is 3.6 megajoules, right?

[NotFuzzyWarm]

I was also thinking about awesome lasers a bit, but I only know the classroom math there instead of actually playing with them on a daily basis; be assured I am darn jealous.

One KWh is 3.6 megajoules, right?

Ja. 1000 watts x 60 sec x60 min

[GayEddie]

I thought this was a S9 thread

[Finksy]

[QuintLeo]

... DC does not travel well over distance ...

Yes, it is.

We are talking about residential 240V AC power & not 500KV of power transfer.

Anyway, it's got boring now.......

 DC actually travels BETTER over distance, due to AC suffering from skin effect.

 The REASON AC is more common is that it's a much lower technology need to change the VOLTAGE of AC power, and HIGHER VOLTAGE is a much more important consideration on losses for power transmission than skin effect is.



 Bills are generally in wattHOURS, not watts straight up - though some electric companies charge a "use fee" on some of their rates based on the peak watt usage IN ADDITION TO the actual charge for watthours.



 The problem with common lead-acid batteries is that while they might have a "nominal" voltage rating of 2Vdc per cell, they ACTUALLY have a normal voltage a fair bit more than that. A common auto "12V" battery usually has more like 13.5ish volts output at low amperage draw when full charged, and charging circuits commonly go as high as 15VDC.
 "12V" Gel Cells like many UPS units and some solar setups use tend to be in the same range as they use the same technology with some minor modifications to allow them to be sealed.

[philipma1957]

I have been contacted by Yoshi of Bitmain warranty.  

I will need to pull board take photos and send to Colorado. Better then spending 110-149 to ship to China.

   I will drive to the solar array on monday and pull boards.  I will continue to post how it is handled.  Include Emails with redacted info I.E. my personal info.  I go back to older times in BTC  when BFL  and real asic ripoffs were all over the place. So I actually want Bitmaintech to figure a better warranty method.  Including the idea I posted above.  I.E.  a discount for no warranty  Since shipping a piece of gear and spending 110-150 to be told no warranty is bad for business.

I salute you for your efforts and I get it that you want it to be better for everyone.
Hopefully, it would not be a one-off deal, but something that will change their understanding of the situation.
People cannot continue to buy miners that brake even in a year while warranty is so inadequate.
That said, no warranty at all is just a recipe for potential abuse. They need to make it 1 year.

Yeah maybe 6 months and maybe a better method then shipping to China and getting rejected.

Here are 2 photos of the dead board. Some things to note it looks to have zero damage.
 It has hand written notes on one side.
The good boards in that miner have no writing. My guess is this board had a fail on its quality check at the factory and then a tired or careless worker installed it.
I worked in assembly line work to help pay for my college degree.  This error happens more then one would think.
I am pretty sure I will get a replacement board Which reminds me I will need to give Yoshi a return address.





notice good board has no writing here

[NotFuzzyWarm]

Ja, possibly the board failed QC a xx speed so maybe was binned as runnable at a lower speed.

I'm rather puzzled by the top heatsinks not being nicely (or at least better) aligned. Probably explains why some s7/9's are sirens and others not too bad.

You would think that they would be using a pick-and-place to put them on which should be very very repeatable or if being put on by hand (shudder) at least a frame of some sort to locate them and keep in place until the thermal epoxy hardens...

[edonkey]

Anyone here read Chinese? If so, are those hand written symbols on Phil's bad board readable?

In particular it would be interesting to know the meaning of the symbol that looks like a 4 with a line through it.

[aarons6]

Anyone here read Chinese? If so, are those hand written symbols on Phil's bad board readable?

In particular it would be interesting to know the meaning of the symbol that looks like a 4 with a line through it.

i think it means they need to send phill a new board free of charge.. the upside 4 means power.. so im guessing it says no power.. but i dont speak chinese.