Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 141.

philipma1957

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'The right to privacy matters'

Quote from: coinits on May 06, 2017, 11:03:03 AM

Quote from: philipma1957 on May 06, 2017, 10:57:52 AM

Quote from: coinits on May 06, 2017, 10:44:22 AM

What would my daily BTC be from an S9 @13.5 TH/s?

I have a chance to buy one for $1800 Canadian funds that includes power supply.

Trying to determine ROI

https://bitcoinwisdom.com/bitcoin/difficulty

BTC/day 0.006504 before power cost

so remember to include power cost which is about 30 k-watts a day

Thanks. With power costs and exchange rate to CDN factored in it works out to $9.14 per day profit. So 197 days to ROI.

and do not forget the diff could go up and coin price could go down or stay steady but higher diff will slow the profit.

So maybe 250 days not 200

ComputerGenie

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Retired IRCX God

Quote from: coinits on May 06, 2017, 11:03:03 AM

Thanks. With power costs and exchange rate to CDN factored in it works out to $9.14 per day profit. So 197 days to ROI.

If you did your maths correctly, I'm guessing that most people wish they had your cheap electric rates. Shocked

coinits

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011110000110110101110010

Quote from: philipma1957 on May 06, 2017, 10:57:52 AM

Quote from: coinits on May 06, 2017, 10:44:22 AM

What would my daily BTC be from an S9 @13.5 TH/s?

I have a chance to buy one for $1800 Canadian funds that includes power supply.

Trying to determine ROI

https://bitcoinwisdom.com/bitcoin/difficulty

BTC/day 0.006504 before power cost

so remember to include power cost which is about 30 k-watts a day

Thanks. With power costs and exchange rate to CDN factored in it works out to $9.14 per day profit. So 197 days to ROI.

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: coinits on May 06, 2017, 10:44:22 AM

What would my daily BTC be from an S9 @13.5 TH/s?

I have a chance to buy one for $1800 Canadian funds that includes power supply.

Trying to determine ROI

https://bitcoinwisdom.com/bitcoin/difficulty

BTC/day 0.006504 before power cost

so remember to include power cost which is about 30 k-watts a day

coinits

legendary

Activity: 1582

Merit: 1019

011110000110110101110010

What would my daily BTC be from an S9 @13.5 TH/s?

I have a chance to buy one for $1800 Canadian funds that includes power supply.

Trying to determine ROI

GMPoison

sr. member

Activity: 434

Merit: 250

Thank you both.

VentMine

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Quote from: NotFuzzyWarm on May 05, 2017, 09:01:26 AM

1st thought should be to Google 'convert watts to BTU'. Why does no one seem to know how to use search engines....
FWIW, BTU/hr=Watts x 3.4129

The CFM, fair question. Don't think there is any data on that. I believe the fans move 250CFM free-air but under load, pure guesswork. I'd ballpark it as around 150CFM

I looked up the specs of the Antminer fans, they output 220 CFM at 6000 rpm with no diff pressure. In practice there will be diff pressure across the miner so it should be somewhat less.

NotFuzzyWarm

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Evil beware: We have waffles!

Quote from: GMPoison on May 05, 2017, 09:29:27 AM

Quote from: NotFuzzyWarm on May 05, 2017, 09:01:26 AM

1st thought should be to Google 'convert watts to BTU'. Why does no one seem to know how to use search engines....
FWIW, BTU/hr=Watts x 3.4129

The CFM, fair question. Don't think there is any data on that. I believe the fans move 250CFM free-air but under load, pure guesswork. I'd ballpark it as around 150CFM

I didn't know figuring out BTU was as simple as plugging in the number of watts, I thought it was different for every machine. Some machines are less efficient so they put out more heat per watt, some are designed better than others so they put out less heat per watt, etc. was my line of logic.

The miner efficiency is irrelevant and only compares hash rate to power used, has nothing to do with heat load.

For any electric power heat source they are all 100% efficient. Power in = power out as heat.
Cooling is of course another matter as it involves work moving heat from one location to another, not creating heat. In that case efficiency does matter but only in the sense that it takes x amount of power turned into y amount of mechanical energy (with losses turned into heat) to move z amount of heat energy.

GMPoison

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Activity: 434

Merit: 250

Quote from: NotFuzzyWarm on May 05, 2017, 09:01:26 AM

1st thought should be to Google 'convert watts to BTU'. Why does no one seem to know how to use search engines....
FWIW, BTU/hr=Watts x 3.4129

The CFM, fair question. Don't think there is any data on that. I believe the fans move 250CFM free-air but under load, pure guesswork. I'd ballpark it as around 150CFM

I didn't know figuring out BTU was as simple as plugging in the number of watts, I thought it was different for every machine. Some machines are less efficient so they put out more heat per watt, some are designed better than others so they put out less heat per watt, etc. was my line of logic.

NotFuzzyWarm

legendary

Activity: 3822

Merit: 2703

Evil beware: We have waffles!

1st thought should be to Google 'convert watts to BTU'. Why does no one seem to know how to use search engines....
FWIW, BTU/hr=Watts x 3.4129

The CFM, fair question. Don't think there is any data on that. I believe the fans move 250CFM free-air but under load, pure guesswork. I'd ballpark it as around 150CFM

GMPoison

sr. member

Activity: 434

Merit: 250

Does anyone have the numbers on how much heat in BTU's an S9 puts out, and at what CFM? I want to calculate how much CFM my exhaust fans need to have so it exceeds the amount CFM that the miners (and swamp cooler) put out, and how much cooling I will need based upon how much heat the S9 (and dehumidifier) generates. Thanks!

ComputerGenie

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Retired IRCX God

The B12 header has been on almost every S9 sale page since B11 (and at least 3 different total hashrates), that doesn't make them B12.

NotFuzzyWarm

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Evil beware: We have waffles!

Quote from: oawan on May 02, 2017, 12:38:32 AM

It looks like the S9's currently for sale are from a previous batch, batch 12. Does anyone have them? How is the reliability?

What gives you the idea they are from batch-12? Their speed? I see nothing in the ad saying that they old/used miners. Speed all depends on how well the latest lots of chips from TSMC test.

Bitmain will not sell miners from over 6-8 months back in the production order without stating that they are from an older run (or used). Last one I got is a batch-25.

Sierra8561

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Quote from: oawan on May 02, 2017, 12:38:32 AM

It looks like the S9's currently for sale are from a previous batch, batch 12. Does anyone have them? How is the reliability?

I have a few of the batch 12's no problems at all.

oawan

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It looks like the S9's currently for sale are from a previous batch, batch 12. Does anyone have them? How is the reliability?

Minor Miner

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Be A Digital Miner

Quote from: NotFuzzyWarm on May 01, 2017, 05:46:20 PM

Yes people have used wire transfer. Um, it is NOT free. The banks usually on your end and Bitmain's end will both charge fees. Never used wire so don't know how much but someone here HAS mentioned/talked about it. Throw in the hassle factor/your time for going to the bank and I'd bet it works out the same either way.

edit: Actually, just ask your bank what their wire fee is...

$25 to $45.

NotFuzzyWarm

legendary

Activity: 3822

Merit: 2703

Evil beware: We have waffles!

Yes people have used wire transfer. Um, it is NOT free. The banks usually on your end and Bitmain's end will both charge fees. Never used wire so don't know how much but someone here HAS mentioned/talked about it. Throw in the hassle factor/your time for going to the bank and I'd bet it works out the same either way.

edit: Actually, just ask your bank what their wire fee is...

Rodawg

newbie

Activity: 7

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So ridiculous--currently, sale price of S9 says "1089 USD ( 0.858 BTC )". That is an exchange rate of $1269. Even okcoin.com says, "Last $1,377.26 High $1,380.00 Low $1,338.24". Conservative exchanges rates elsewhere (i.e. COINBASE.COM) show $1460.
Therefore, BITMAIN Rate = Rate Elsewhere + $100 + $100 => BITMAIN is charging $200 more per miner or almost 20% premium!!

Angry

[/quote]

On this topic--Has anyone paid BITMAIN via Wire Transfer?

That would be one way to get around this "$200 BTC Premium" they are charging...

Thanks in advance for the help.

Rodawg

newbie

Activity: 7

Merit: 0

Quote from: ComputerGenie on April 28, 2017, 04:12:01 PM

Quote from: Minor Miner on April 28, 2017, 10:54:03 AM

How come the BTC Rate on the bitmain site is constantly $100 below market? are they keying of BTC-e?

https://www.okcoin.com/api/v1/ticker.do?symbol=btc_usd

Code:

{
"date": "1493413852",
"ticker": {
"buy": "1232.32",
"high": "1322.1",
"last": "1233.19",
"low": "1209.0",
"sell": "1233.53",
"vol": "4889.364"
}
}

So ridiculous--currently, sale price of S9 says "1089 USD ( 0.858 BTC )". That is an exchange rate of $1269. Even okcoin.com says, "Last $1,377.26 High $1,380.00 Low $1,338.24". Conservative exchanges rates elsewhere (i.e. COINBASE.COM) show $1460.
Therefore, BITMAIN Rate = Rate Elsewhere + $100 + $100 => BITMAIN is charging $200 more per miner or almost 20% premium!!

Angry

HerbPean

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Activity: 1638

Merit: 1005

Quote from: allinvain on April 28, 2017, 04:32:24 PM

Quote from: fanatic26 on April 28, 2017, 11:03:46 AM

Quote from: allinvain on April 27, 2017, 10:00:26 PM

I have noticed that the temperature sensor on S9 boards has an unusually high failure rate and it's taking down entire hashboards with it. When the sensor goes bad the board no longer hashes. This has happened on numerous occassions with our customers' gears. Does anyone know by any chance if there is a way to fix this. Does someone know where this temp sensor is located (picture would be really helpful) and if it can be swapped out/fixed/repaired, etc?

The temp sensors are actually built into the chip itself. Problem is they only pull data from chip 63 so if that one has a problem you are out of luck. It will be fixed under warranty but there is basically nothing that you can do as an end user to fix it.

Oh crap, that's the worst case scenario. Dammit Bitmain why you go so cheap on the design/build quality? Do they not realize that if the miner dies out of warranty they are just basically screwing their customers out of ROI. Should these things not be built well enough/smart enough that they will last more than 6 months before killing themselves.

If there code were public, you could change it and pull the temp from any chip you want.

Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 141. (Read 531168 times)