Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 196. (Read 528055 times)

If he has a RPi he could also set up a home VPN and just connect to that to navigate to the miner's interface. Might be a little safer than configuring all the miners to be directly accessible over the Internet.

Bitmain Warranty has not responded to my ticket (#1384) since i reported that using the SD card did not work and the control board seems to be bricked. I also asked them if i could have approval to do an RMA and no response to that either.

Should I blindly send the controller ( with my invoice etc.) to Bitmain Warranty in Denver and hope they do something for me?

or

Do i have to wait for them to respond with some kind of RMA approval number like you you get from other companies (ex: Corsair, EVGA etc.)?

Coinbase

Why the "blanket" statement?  It may not be profitable for "you."  Does this mean it's not profitable for anyone else?  Like in another country, maybe?  I can tell by your local time and your estimated cost for customs fees that you are located in Europe.

1 BTC for "customs fees?"  Really?  WOW!!!  No wonder you don't want to buy S7's.  I can imagine your power costs may be substantially more than many of us in the US as well.

By the way, I also have my own PSU's for over a year from mining with previous rigs I owned well before the S7 was available.  They were $65.00 USD each [With free shipping] and two of them can power 5 x S7's very easily.  Do I have to buy new PSU's?  No, I don't.  I will have to buy more PCI-e cables to power them @ $3.25 each.  That is 7 x 16 AWG PCI-e cables for each S7 = $22.75 USD (0.07 BTC).

I have enough PSU's at present to power 54 x S7's.  Will I need to buy more PSU's soon?  Yes, I will.  Even if I do have to buy more PSU's with breakout boards soon, I can get them at $65 USD + $65 for breakout board = $130 USD (0.39BTC) for each .  Don't forget that each PSU I use can power 2.5 x S7's.  So, if we divide 0.39BTC by 2.5 = 0.156BTC costs for PSU for each S7.  0.156BTC + 0.07BTC for PCI-e cords = 0.226BTC

So, 0.226BTC my costs for PSU to power 1 x S7 compared to your 0.487BTC for PSU with PCI'e cords is more than double my cost.  

I have no "customs" fees.  I have the occasional brokerage fee of $29.00 USD to $69.00 USD depending on how many units were purchased.  Many times there is no brokerage fee at all.  It depends on whether I'm one of the lucky ones to be chosen among all the packages coming through.

So, try 4.73BTC for S7 + 0.226BTC for PSU with breakout board and PCI-e cords = 4.956BTC + 0.155 for shipping = 5.111BTC for me in the US compared to your 6.217BTC in Europe.  

But remember, the first 54 x S7's I purchase do not include the additional costs of PSU with breakout board and PCI-e cords.  Which means the first 54 x S7's for me would be 4.73BTC + 0.155BTC for shipping = 4.928BTC for me compared to your 6.217BTC.



Yes, I know your calculations are with FREE electricity.  However, the cost per S7 for me is 1.106BTC cheaper than yours IF I had to buy PSU's with PCI-e cords and breakout board.  My costs for the first 54 x S7's are 0.226BTC cheaper than that, seeing that no PSU's are required.  Which means 1.332BTC cheaper than your costs for the first 54 x S7's.





Oh really?  So, it's okay for you to "buy" your BTC and speculate on price?  Yet, we who mine BTC, cannot speculate the price of bitcoin will increase just as you speculate?  We who mine have to assume a stable price (flat line)?  If that's the case, "you" who "buys" BTC has to assume a "stable" price as well and thereby not make one cent in profit cause you too would have to assume a "flat line price with no increase."  Why is it that we (who mine) cannot speculate on our investment and you (who buys) can speculate on yours?  

The rules you have placed on miners are disingenuous.  Both buyers and miners can speculate on price when investing.  We are simply investing in a different "means" to accomplish a similar "ends" ...  RETURN ON INVESTMENT WITH PROFITS.

We (who mine) are "buying" BTC just as you are buying BTC but in a different way.  You (the buyer) and we (the miner) can BOTH SPECULATE on an increase in price of BTC.  I'm speculating the price of BTC will increase at a percentage rate much higher than the percentage rate of difficulty increase over the next 9 months.  Just as you (the buyer) speculate on the price of bitcoin as well with Elliot Waves, bullish or bearish news or by whatever means you use in your speculation to have not only a return on investment (ROI) but gains to boot.

Is my speculation a bit more riskier than yours?  Yes.  However, where there are greater risks can also result in greater rewards if speculation for those greater risks come to pass.

After the halving? I am not sure what the S7 will worth. Maybe $300 - $400.
PSU will worth something like $100.

There is no point to buy mining hardware and just hope for a BTC price increase. Just buying and holding BTC is much simpler and safer.
All ROI calculations should assume a stable BTC price . In other words, you should calculate your initial costs in BTC and see how many BTC you will get back. By investing 4.73 BTCfor a S7 + 0.487 BTC for PSU + ~1BTC for customs fees = 6.217BTC total, you will probably earn these BTC back by August 2016, just after the halving.


First of all, these increases are monthly increases, not the increase every 2 weeks.
Second, I assumed 5 billion increase each month, not 5% (i.e. linear increase, not exponential).
These assumptions for difficulty increase are fairly optimistic.
Even with ZERO diff increase. ROI will happen in June 2016.
And remember, these calculations are with FREE electricity!

You are betting on 5% diff increases?

Only with Bitmain throwing shittons of HW out the door are we seeing that much.  They won't be putting gear online @ 5% for that many months at least!

Seba.... how do you exchange BTC to USD in your country? Just curious

teamviewer is free for non business use..

you can try cryptoglance.. it lets do you everything you say.. you just need to edit the cgminer line to open the port.

Port forwarding is your friend.  There are literally numerous ways to configure port forwarding.
You could simply install vnc server (most of which are free) on a box on the local lan and port forward to it on the router and use it for remote control if you don't want to configure multiple port forwards for each unit.
I'm surprised at how many people here suggest software application beyond network configuration given this is all networking.

Good point, thanks.

You should mine outside China's pools anyways. Better payout and the Chinese has plenty of hashrate already.
Check out Kano, or Slush pool if you need steady payouts i'd say.

Does antpool have ddos issues?
My poolside hashrate dropped and the miner side looks fine.
It did not flip to the secondary pool.
Ran f2pool as primary for four days without any issues.
Now with antpool as primary I see poolside hashrate drop.
Maybe the server with the stats took a hit.

yes indeed the hoops, and thank you.

Yes.  It confirmed fairly quickly, though I've heard from prior batches that they prioritize BTC payments over Wire transfers for shipping order ()

Also, even though I chose to "pay all fees" associated with the wire transfer, they emailed me saying the transfer came up a bit short, and I had to pay the remainder by BTC.  Oh the hoops we jump through...

Has anyone here did a wire transfer to buy a miner from bitmain. I'm thinking on buying another miner from them but don't have any bitcoins left since I exchanged them for usd.  

did you calculate the money you get when you sell the s7 ?

Yes it has really been a circus. Will be really tricky like you said to buy a used one. I like the "runt" reference, I think I peed myself laughing.
Overall they are quite the excellent machine.

I just find the whole S7 batches confusing.  I mean they are taking orders a month ahead.... which I'm not a huge fan of but I can understand it.   I liked when they ship closer to order date.

But the entire changing hashing speed per batch is getting to a almost laughable level.  I mean when S7 starts to be sold to go to second homes (eventually on a lot of them) it's going to be a mess.   I just think resale/buying used is going to be a lot more challenging with so many different specs for the same model miner. 

Going by the list, the odd numbered batches have the best bang for your buck...the even numbered ones are the runts that didn't make proper spec.