How much power will an S7 use per month in kWh?

VirosaGITS

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Quote from: fanatic26 on April 21, 2016, 07:13:58 PM

Quote from: philipma1957 on January 26, 2016, 07:47:46 PM

If you buy a server 2980 platinum or a 2880 silver server psu

They cost at least 100usd less. Can run 2 s-7's

Running two S7s @ 1400w each means you are running 2800w on a 2880-2980w PSU. You really dont want to push power supplies to nearly 100% of their rated power, server class hardware or not.

Thats more like 90% load, and plenty of server grade PSU are designed to run at 100% load, which is DC, not AC.

fanatic26

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Quote from: philipma1957 on January 26, 2016, 07:47:46 PM

If you buy a server 2980 platinum or a 2880 silver server psu

They cost at least 100usd less. Can run 2 s-7's

Running two S7s @ 1400w each means you are running 2800w on a 2880-2980w PSU. You really dont want to push power supplies to nearly 100% of their rated power, server class hardware or not.

VirosaGITS

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Quote from: BTC_ISTANBUL on April 15, 2016, 11:22:10 AM

The consumption of S7 is exactly 1202.50 Watt.

If the efficiency of PSU is 0.93 then we get 1293 Watt.

Its really not. Its more 1300w DC. I got 135 Chip # units doing 1375w at the wall, and units doing 1430w at the wall. If you want better efficiency, you're gonna have to get used high chip count S7.

notlist3d

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Quote from: QuintLeo on April 16, 2016, 02:12:53 AM

Most Gold-rated power supplies are between 1-2% more efficient running from 220v vs 110v.

The S7 does NOT use that exact of power draw - they vary quite a bit depending on the batch and individual units WITHIN a batch will vary, as well as if you're overclocking them and how much (or underclocking them 'cause it's too HOT and how much).

Also, Bitmain seems to have done a lot of "cut and paste" on their specs for the various S7 batches, batches that SHOULD have had different power consumption 'cause they changed the number of chips on each hashboard were SPECIFIED identically in a couple cases. I'd take ANY Bitmain spec on S7 power draw with about a POUND of salt.

Batch 8 and on they took away chips and jacked frequency high. And before batch 8 there were so many different specs it's crazy. I would agree power draw is not same for all, the listed just does not fit when they make large changes to units

I would personally get a reading from your unit if you buy one, as that is going to be accurate. But this does make ROI math hard as you will not be exact with what it is with using listed electricity usage.

QuintLeo

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Most Gold-rated power supplies are between 1-2% more efficient running from 220v vs 110v.

The S7 does NOT use that exact of power draw - they vary quite a bit depending on the batch and individual units WITHIN a batch will vary, as well as if you're overclocking them and how much (or underclocking them 'cause it's too HOT and how much).

Also, Bitmain seems to have done a lot of "cut and paste" on their specs for the various S7 batches, batches that SHOULD have had different power consumption 'cause they changed the number of chips on each hashboard were SPECIFIED identically in a couple cases. I'd take ANY Bitmain spec on S7 power draw with about a POUND of salt.

BTC_ISTANBUL

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The consumption of S7 is exactly 1202.50 Watt.

If the efficiency of PSU is 0.93 then we get 1293 Watt.

philipma1957

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Quote from: BTC_ISTANBUL on April 06, 2016, 01:35:13 AM

Let me acknowledge about power comsumption of S7 : 1200 WATT / efficiency of PSU

not really the newer ones are more like 1300 watts dc/ efficiency of PSU = 1430 ac at wall

https://www.bitmaintech.com/productDetail.htm?pid=000201603310959482268cfunbq106E5

S7 Specifications:

1. Hash Rate: 4.73 TH/s ±5%

2. Power Consumption: 1293W + 10% (at the wall, with APW3, 93% efficiency, 25C ambient temp)

3. Power Efficiency: 0.25 J/GH + 10% (at the wall, with APW3, 93% efficiency, 25°C ambient temp)

4. Rated Voltage: 11.60 ~13.00V

5. Chip quantity per unit: 135x BM1385

6. Dimensions: 301mm(L)*123mm(W)*155mm(H)

7. Cooling: 1x 12038 fan

8. Operating Temperature: 0 °C to 40 °C

9. Network Connection: Ethernet

10. Default Frequency: 700M

BTC_ISTANBUL

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Let me acknowledge about power comsumption of S7 : 1200 WATT / efficiency of PSU

philipma1957

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'The right to privacy matters'

Lastly the 1600 g2. Costs solid money

If you buy a server 2980 platinum or a 2880 silver server psu

They cost at least 100usd less. Can run 2 s-7's

And I have finally developed a decent fan mod for under 30 usd.

I am almost ready to show it.

On this site.

unholycactus

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Your electricity provider might have cheaper rates during specific periods of the day and/or the first few kWh of a cycle.
Aside from that, your PSU efficiency is the only thing you should really considerate, the rest cannot be easily changed.

notlist3d

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Quote from: BTC_ISTANBUL on January 25, 2016, 12:47:38 PM

Electricity Spend (usdcents) = installed power * 30 days * 24 hours * availability * electricity price per kwh

I think your equation is over complicatated, and not sure I follow it. What does availability of electricity have to do with getting cost? You might have a lot available but it's the amount you use that is going to be calculated.

Power used * electricity rate You can get daily from that then just times it for number of day's in month. For example look at using coinwarz to get daily:
http://www.coinwarz.com/cryptocurrency

Entering 1400 watts at .10 cents you get - $3.36 for electricity per day. So times it by day's in month say January 31. 3.36 X 31 = 104.16 So you are pretty close at 100ish. Just make sure that .10 cents includes things I mention in above post. Past electricity bill is honestly best way to get it.

BTC_ISTANBUL

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Electricity Spend (usdcents) = installed power * 30 days * 24 hours * availability * electricity price per kwh

notlist3d

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Quote from: jeremyf327 on January 24, 2016, 01:42:42 AM

Quote from: VirosaGITS on January 23, 2016, 11:31:58 PM

Quote from: jeremyf327 on January 23, 2016, 10:57:50 PM

I have two questions:

Can someone give me an idea how much power an S7 will use per month in KwH's? (I know there are a few variables like efficiency and temperature)

What is the main difference I will see with plugging an S7 in a 120v, 208v, or 240v outlet using an EVGA G2 1600w power supply? Will this just make the S7 more efficient or will I also save on power?

Thanks for your input.

240v should be more efficient, by maybe 1% more. The kW depend on the S7, but kW/h = kW per hour. So you just multiply kW per the number of hours in the month. Tongue

So a B8 would be 1.4kW * amount of hours in the month.

Ok....so...

30 days X 24 hours = 720 hours a month

1.4kW X 720 = 1008 kWh

and assuming .10 per kWh...power cost would be 1008 X .10 = $100 per month

Normally I dont recommend this site but it is good for power. http://www.coinwarz.com/cryptocurrency

Entering 1400 watts at .10 cents you get - $3.36 for electricity per day. So times it by day's in month say January 31. 3.36 X 31 = 104.16 So you are pretty close at 100ish. Just make sure that .10 cents includes things I mention in above post. Past electricity bill is honestly best way to get it.

jeremyf327

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Quote from: VirosaGITS on January 23, 2016, 11:31:58 PM

Quote from: jeremyf327 on January 23, 2016, 10:57:50 PM

I have two questions:

Can someone give me an idea how much power an S7 will use per month in KwH's? (I know there are a few variables like efficiency and temperature)

What is the main difference I will see with plugging an S7 in a 120v, 208v, or 240v outlet using an EVGA G2 1600w power supply? Will this just make the S7 more efficient or will I also save on power?

Thanks for your input.

240v should be more efficient, by maybe 1% more. The kW depend on the S7, but kW/h = kW per hour. So you just multiply kW per the number of hours in the month. Tongue

So a B8 would be 1.4kW * amount of hours in the month.

Ok....so...

30 days X 24 hours = 720 hours a month

1.4kW X 720 = 1008 kWh

and assuming .10 per kWh...power cost would be 1008 X .10 = $100 per month

notlist3d

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Quote from: VirosaGITS on January 23, 2016, 11:31:58 PM

Quote from: jeremyf327 on January 23, 2016, 10:57:50 PM

I have two questions:

Can someone give me an idea how much power an S7 will use per month in KwH's? (I know there are a few variables like efficiency and temperature)

What is the main difference I will see with plugging an S7 in a 120v, 208v, or 240v outlet using an EVGA G2 1600w power supply? Will this just make the S7 more efficient or will I also save on power?

Thanks for your input.

240v should be more efficient, by maybe 1% more. The kW depend on the S7, but kW/h = kW per hour. So you just multiply kW per the number of hours in the month. Tongue

So a B8 would be 1.4kW * amount of hours in the month.

Having 220/240 also saves you on PSU's for S7. You are able to get some nice server PSU's including the bitmain ones. And they are a heck of a lot cheaper then a ATX EVGA 1600. Were talking like less than 1/2.

If you know your electricity you can get a decent idea of what running for a month will cost. Biggest mistake make sure to include any fee's or taxes. Getting it from a previous months bill is best, also know if you are based on tiers or not.

VirosaGITS

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Quote from: jeremyf327 on January 23, 2016, 10:57:50 PM

I have two questions:

Can someone give me an idea how much power an S7 will use per month in KwH's? (I know there are a few variables like efficiency and temperature)

What is the main difference I will see with plugging an S7 in a 120v, 208v, or 240v outlet using an EVGA G2 1600w power supply? Will this just make the S7 more efficient or will I also save on power?

Thanks for your input.

240v should be more efficient, by maybe 1% more. The kW depend on the S7, but kW/h = kW per hour. So you just multiply kW per the number of hours in the month. Tongue

So a B8 would be 1.4kW * amount of hours in the month.

jeremyf327

member

Activity: 79

Merit: 10

I have two questions:

Can someone give me an idea how much power an S7 will use per month in KwH's? (I know there are a few variables like efficiency and temperature)

What is the main difference I will see with plugging an S7 in a 120v, 208v, or 240v outlet using an EVGA G2 1600w power supply? Will this just make the S7 more efficient or will I also save on power?

Thanks for your input.

Topic: How much power will an S7 use per month in kWh? (Read 3017 times)