Industrial Miners and ROI Question

[tokeweed]

I'm writing a paper on Bitcoin mining/cloud hashing and came across this comment.  I was wondering what others think about this.   I would also like to know more about the sustainability and profitability of industrial Bitcoin miners from all of you.

Thanks.

i think the majority already roied on their old equipments, they are there since many years already

a random chinese farm with 100 peta spent something like, what...100k btc?(5 btc 1 antminer s7 x 20k s7(100peta/5tera)), but they can produce 500 btc daily x 365 = 180k btc...

this mean that any farm running s7 can pay their equipment in 6 months, and then every new added asic can be payed in no time, they only need to face the electricity bills at present

this electricity bills is ridiculous low, because the ratio between the earning and consumption for 1 s7 is 8:1(8 in earning 1 in consumption), $360/$45(monthly) at 0.05 cent per hour

maintenance cost can be done by some 2-3 guys, once in a months, i don't see a big problem with it, it would not increase the overall cost by much, probably peanuts

if you give $1k a month to one chinese guy, i'm sure he can clean you 1k machine in one day...

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[notlist3d]

I'm writing a paper on Bitcoin mining/cloud hashing and came across this comment.  I was wondering what others think about this.   I would also like to know more about the sustainability and profitability of industrial Bitcoin miners from all of you.

Thanks.

i think the majority already roied on their old equipments, they are there since many years already

a random chinese farm with 100 peta spent something like, what...100k btc?(5 btc 1 antminer s7 x 20k s7(100peta/5tera)), but they can produce 500 btc daily x 365 = 180k btc...

this mean that any farm running s7 can pay their equipment in 6 months, and then every new added asic can be payed in no time, they only need to face the electricity bills at present

this electricity bills is ridiculous low, because the ratio between the earning and consumption for 1 s7 is 8:1(8 in earning 1 in consumption), $360/$45(monthly) at 0.05 cent per hour

maintenance cost can be done by some 2-3 guys, once in a months, i don't see a big problem with it, it would not increase the overall cost by much, probably peanuts

if you give $1k a month to one chinese guy, i'm sure he can clean you 1k machine in one day...

Honestly most industrial operations are not open books.  So you can speculate but I don't think you will get accurate industrial average.  Your goal is as cheap as possible... but not to tell all competition what your getting.  Open companies are few and far between.  How big are you talking? Spoondolies is biggest one I can think of that since merging with a company has a lot of financial data out.

On other one your talking about Industrial in China... again not open book at all.  So you will be able to speculate, but I don't think you will find one with open books.

[Amph]

try to ask eric here https://bitcointalk.org/index.php?topic=1072474.0

he seems the one that can give you this kind of answer more accurately