Topic: The ceiling of difficulty with 28nm technology - page 2. (Read 2430 times)
Can you give me an example of such an area?
Even with other fees, it's well under $0.05/kwh in certain areas.
As for power interruptions, high power consumption sites (industrial loads) can get substantially cheaper power in some areas if they agree to load shed a few times a year (typically for minutes to hours) and basically turn off the main power consumption items to reduce grid load. You have to be sucking a LOT of power to do this, but in exchange for the power company being able to turn you off with little to no warning, you can get a much reduced power rate. Bitcoin mining being interrupted doesn't affect it other than the loss of mining capacity during those times, so allowing it to be interrupted and restarted for a reduced power rate year round is likely to be a net win as well.
As for power interruptions, high power consumption sites (industrial loads) can get substantially cheaper power in some areas if they agree to load shed a few times a year (typically for minutes to hours) and basically turn off the main power consumption items to reduce grid load. You have to be sucking a LOT of power to do this, but in exchange for the power company being able to turn you off with little to no warning, you can get a much reduced power rate. Bitcoin mining being interrupted doesn't affect it other than the loss of mining capacity during those times, so allowing it to be interrupted and restarted for a reduced power rate year round is likely to be a net win as well.
If you are looking for the cheapest electricity costs you should keep in mind that this is just a percentage of the total cost per kwh. The other costs involved are often much bigger than the electricity itself.
If we look at the Belgian electricity cost, at first glance you could think it is cheap, around 5 to 8 € cents. If you dig a little deeper you will find out this is only about 35% of the total electricity bill. You have also distribution costs, transportation costs, green energy costs, taxes, fixed costs etc This will make the total cost of 1 kwh about 18 to 22 € cent, a world of difference.
So is the 2-3 cents the total cost of 1 kwh?
Power interruptions...big difference between (milli)seconds and hours... Can you explain a little more?
If we look at the Belgian electricity cost, at first glance you could think it is cheap, around 5 to 8 € cents. If you dig a little deeper you will find out this is only about 35% of the total electricity bill. You have also distribution costs, transportation costs, green energy costs, taxes, fixed costs etc This will make the total cost of 1 kwh about 18 to 22 € cent, a world of difference.
So is the 2-3 cents the total cost of 1 kwh?
Power interruptions...big difference between (milli)seconds and hours... Can you explain a little more?
If someone is mining at $0.15/kwh they are far from optimal.
There are places in the USA where you can get industrial power for $0.02-$0.03/kwh, and possibly less if you agree to interruptions (bitcoin mining is a perfect interruptible load).
That pushes the numbers much higher.
There are places in the USA where you can get industrial power for $0.02-$0.03/kwh, and possibly less if you agree to interruptions (bitcoin mining is a perfect interruptible load).
That pushes the numbers much higher.
The ceiling of difficulty depends on 4 things:
* BTC/USD price
* cost of hardware fully deployed
* power consumption / GH
* electricity costs
If you know these 4 things, calculating the maximum difficulty is easy.
* BTC/USD = 100$
* 28nm ASIC's production cost is about 1$ / GH including deployment (after NRE is completely funded)
* 0,6W / GH
* electricity costs all in 0,03$ (USA ideal situation)
The total revenue of 1 year of mining at a 100$ exchange rate is:
131,400,000$
(100*25*6*24*365)
1 year of electricity for 1 GH will be 0,158$
(0.6/1000*24*365*0.03)
If you want to have a ROI of 1 year the production cost of the hardware is 1$ /GH/year
If you want to have a ROI of 2 year the production cost of the hardware is 0,5$ /GH/year
So the revenue you have to make is:
ROI 1 year: 1$ + 0,158$ = 1,158$ /GH
ROI 2 year: 0,5$ + 0,158$ = 0,658$ /GH
The total revenue of the network is 131,400,000$ /year
Now we can calculate the maximum hashing rate of the network with a 28nm technology:
ROI 1 year : 113,000 TH or 113 PH
ROI 2 years : 199,700 TH or 200 PH
This does not take into account any labour costs / hosting costs / tax / margin for profit
* BTC/USD price
* cost of hardware fully deployed
* power consumption / GH
* electricity costs
If you know these 4 things, calculating the maximum difficulty is easy.
* BTC/USD = 100$
* 28nm ASIC's production cost is about 1$ / GH including deployment (after NRE is completely funded)
* 0,6W / GH
* electricity costs all in 0,03$ (USA ideal situation)
The total revenue of 1 year of mining at a 100$ exchange rate is:
131,400,000$
(100*25*6*24*365)
1 year of electricity for 1 GH will be 0,158$
(0.6/1000*24*365*0.03)
If you want to have a ROI of 1 year the production cost of the hardware is 1$ /GH/year
If you want to have a ROI of 2 year the production cost of the hardware is 0,5$ /GH/year
So the revenue you have to make is:
ROI 1 year: 1$ + 0,158$ = 1,158$ /GH
ROI 2 year: 0,5$ + 0,158$ = 0,658$ /GH
The total revenue of the network is 131,400,000$ /year
Now we can calculate the maximum hashing rate of the network with a 28nm technology:
ROI 1 year : 113,000 TH or 113 PH
ROI 2 years : 199,700 TH or 200 PH
This does not take into account any labour costs / hosting costs / tax / margin for profit
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