Bitcoin Forum

The antminer is 4.73TH/s. My electricity is 0.065$ KW/h. The calculators say that I would need 220-250 days to break even. So my question is - Is it really worth it to invest in Antminer S7?

Such a long break even, seem self explanatory. With the difficulty going up and the halving in like 2 months, you will never ROI, i'm pretty sure.

Honestly it won't be worth your try or anyone's try at this time as mentioned  by "VirosaGITS". If you were asking this question with free electricity and 2 months earlier than now, then I would encouraged you to go and buy it but right now, there's isn't a way to give you a reason worth investing in an S7 (even though it's the most efficient available miner in the market). The estimation you got, is as if nothing goes wrong and you never know when you get dead boards and as result even slower ROI so definitely not a safe move. Soon there will be much more efficient miners out there and you might actually have a chance with those (better chips) but again you pay for your electricity and unlike some that have free one, your going to have tough time finding something worth investing (anytime soon).

if you can handle electricity, then you can go with S7. its just my opinion

With the reward halving shortly and a not so cheap electricity price, i don't see him doing well with purchasing right now. I think this is THE worse time to buy new hardware in 2016.

The hard part is there is no way possibly to make an accurate speculation on 200+ day's out.   Having having a effect  (none know what it will be)  If you enjoy mining with your electricity then you can try it and see what happens, don't invest more then you can loose.

But also keep in mind it's not just difficulty but value.  Value is hard to predict at end of week... so go out 200 day's again one more factor that is going to be hard to guess.   A lot is best guess at this point.

no at this point i would wait for the new asic with 14nm, if you really think that the price will increase it's better to buy bitcoin instead of waiting the miner to generate them, with a risk on your return

I think it's best to just settle for trading if you need relatively fast cash. But if you do not mind waiting for about a year to break even, you had better join a mining pool to increase your chances of earning. ;D

unless the value of BTC spike, but thats a gamble most will not take.

No either way. It would need to bubble hella high and then selling the ASIC would be the best bet anyways. With the halving, outdated things like the S7 is not a good thing to buy. Its a good time to sell them, though.

some really negative answers were given.

I say if you can handle the noise they make . if you have a plan for the heat.  if you have the power supply in hand  go for it.

I assume one unit which is 533   I will send you a free coupon  for 100 usd if you buy from the builder bitmaintech.

so 533- 100 = 433 + 55 to ship to usa   488 is your cost.

My guess is you can lose 250 usd at worst with it.

No one can tell you the up side.   Although  I think you could make 300  profit tops.

Now add in a  price for a psu and I say no since you will be at 650 up front  and very unlikely to clear more then 100 at best.

I'm happy to see someone bring some positive side to this thread.   Many threads it seems have taken a negative light.  But there is positives to to mining I can say personally I have loved it as a hobby for many years.   It has treated me well overall, and I will continue to mine.

Another good thing is PSU's can be used for multiple generations so once you ROI on it... they are great to have.   Also a quality PSU today is still a quality PSU in a year (and longer).  I know I pulled a few of my old PSU's for dabbling in ether a little.  So by buying them once... they have really paid off over and over with being good quality PSU's that I can use in many mining projects or miners.

And of course people forget the original purpose of computer power supplies- THEY. ARE. FOR. COMPUTERS! With an eth rig, simply swap the low end cpu for a 4th Gen i7 or the best Amd you can get and sell it. You'll be surprised how much people will be willing to pay for this stuff. Yep, people are too negative about mining  these days, and sooner or later the prices for mining will be too high and bitcoin mining will go rip for us, but there is always a chance btc price will jump enough for S7s to make a small profit or at least roi.

It seem fair to be negative when there's much better options out there.

It might be fair but is good to see some positive info sometimes, and there are many mining have treated good by mining.  It's getting harder and harder to make a profit I will agree and is highly tied to electricity price.

But there is some good (hopefully) for miners.  We honestly don't know what it will be like around having.   It's all speculation and hard to speculate that far.  So it's hard to say where it will all land.

mining can work... the halving is whats getting everything into a twist.. and the only thing to resolve all of this...
"More Demand for BTC" more demand = price goes up

put it this way if bitcoin went to $1000 tomorrow allot of old miners would be turned on until the halving :)

heres to the halving

I have been asking myself the same question and decided against it and decided to keep the coin and play on markets and buy hash for other crypto that is far better in bringing profits if you are looking for just a profit. asic mining only people who win on bitcoin is free energy and corporate company with massive amounts of equipment. Just buy bitcoin hold it and trade and enjoy a much better profit from it than risking mining with equipment that might not even brake even. Might brake even if you got free energy or cheap but still going to be a tough one when block halving shortly.

no, it is not worth it, even if you get them for free.

If you can't ROI free hardware, you honestly don't know what you're talking about. o.o;


I'd repay the PSU in 1 month, if i had S7's for free.

are you joking? without roi to achieve it's basically all profit from the beginning, since electricity is always very cheap for many people that could have that miner for free

you could earn 0.013 a day at present without worring about anything else, just remove your few cent of electricity....

You are definitely better off just buying Bitcoins, if you have a main source of income, then destinate something like 5% of it to buy XBT.
Ethereum is also a very interesting alternative right now. You may even consider splitting 50/50 your buys, so you invest in both technologies.

50/50 is a little risky I think but that also means possible gain.   I think when buying majority go into BTC if holding long term, and that is my own personal feeling.   I do agree ether looks interesting right now.

I am playing with it a little.   Long term... hard to say but it has a lot of supporters at this point.