Be careful with cloud mining so many scams out there. If you do it just go over to hashnest (research it but I think you will find its currently best).    But anyone looking into cloud really do some serious ROI math.

As far as EU mining I suggest sending to a data center in a place with no import tax, and cheap electricity.  It is not as fun as mining yourself and playing with machines.  But EU is a tough place to ROI for the most part with extra fees and electricity tends to be on high side.

I'm just happy it appears we will be under 10 this week:

Bitcoin Difficulty:    103,880,340,815
Estimated Next Difficulty:    112,938,422,791 (+8.72%)
Adjust time:    After 79 Blocks, About 11.4 hours
Hashrate(?):    900,227,328 GH/s

I hope next change is even smaller and btc price goes up. It seems pretty steady in mid 440's on value this week.

I thought this was going to be stupid from topic .  But it actually is a interesting idea.  It would not ROI or even make sense finacially, but would be interesting to see like a RPI and a compac powered by human.

So neat idea.  Hope someone does it for the fun of it, as it will not be a ROI project one just for fun.

Glad to hear it all worked out.  Only problem I ever had was a weight issue.  UPS somehow picked my package that was a Bitmain PSU for checking... and it weighed more then declared.  So I had to pay like 10 dollars was not bad.

That is all i have had to pay for mistakes.   US is pretty good overall on importing compared to a lot of the EU costs.

I would not consider 240 a lesser option or PSU's that run on it.  It is actually a really good option just not everyone is set up for it.   But for those who can I would go 220/240 go for it.  I really like it in my hobby mining area.  

S7 could go on 120 to, its just for a ATX psu with 10 PCIe is so expensive.  There are not many and they are a lot higher then a 240 server psu that is as good if not better on some.

I think we would all agree buying direct is better option then buying that Craigslist he mentioned.  And that is before you take in fact it sounds he wants BTC 1/2 in advance for Craigslist ad.... which sounds scamy to me still.

Even at the higher B8 price I would still do that over his offer he had.  It is true he could get lucky or not lucky on B9 shipment date no way to say for sure.  So it is a gamble.

Avoid paying 1/2 upfront though craigslist it sounds highly scamy.  Is he asking for you to pay him in BTC?   Or did he take paypal?

Paypal is reversible if he never sends it.   Bitcoin is not reversible, so if he wants BTC I would avoid unless good escrow of your choice, not his.  Also what is price?  I'm wondering if it's too good to be true and he tries from everyone 1/2 up front as a scam.

It does make it quiet but instead of going with water cooling S5 go with Avalon 4.1's.  If you need quiet they will do it with no modifications.  

Watercooling sounds great but I can say it truly is a pain to mess with compared to normal fan's.  Listen to videos of 4.1's they are about the most quiet stock miners with just underclocking. At least that I have used (I'm talking full miners like Dragon 1T or newer, not including stick miners).

I think starting slower and then build up.   Starting at home is not a horrible idea depending on electricity price.  I think you underestimate costs associated with a "cheap warehouse".  You will be spending quite a bit on setup of such a place.  There is the electrical, and cooling is two biggest things I can think of.  And finding a "cheap warehouse" that allows the modifications you need for such might be hard.  

10,000 in this idea would not get you even close to big commercial opperation that's less then 10 S7's and PSU's.  And that does not include the initial startup costs.  I think someone with ability to mine at their home and make a mining area is ahead by far in the 10,000 - 20,000 dollar area on investment.

If you are a miner you want more and more.   I don't see any speculation acurate enough to say what it will do in a year.  A year is a LONG time in crypto time.  Anyone that say's they can predict accuratly... is most likely lying.  As there is not even a good equation they could say they have had.

There are also a lot of factors.  I just don't see how this can be done accurately.

You can hope for that, but chances are very slim.   I expect another at least high single digits.  I don't see what will stop that.

The only great thing is the ones I mined at 220 and held onto now in 440's look a lot nicer.  So past mining is paying off more and more.

Having difficulty changes is better when calculating ROI.  It is a big thing overtime.  It is not just some fancy feature, it is a real variable you deal with when mining.

Coinwarz without having difficulty will never be good for more then current period.  Bitwisdom you get much better longterm which mining is a longterm investment at this point.

As far as mining transfer speed it does not matter.  The difference is 3.0 specifications it is more power than 2.0 specifications so it might have more power to run the usb stick.  But transfer speed does not matter.

Some modify 2.0 usb hubs to have more power so it's not always true on power.  But if you look at specifications usb 3 is around double on paper I think.

Transformer is not really what you need.... it is more likely a breaker.   And it varies on each persons how many amps they have in main.    So some can handle a extra 220/240 no problem.  Others don't have the amps.

Were talking about HUGE pools making a lot in profits.  I don't see them being shutdown I just don't see that. I would guess Chinese government if anything would want to tax it.

But these pools have such huge backing they could easily shift countries it's based in.  For all we know they have a hot site in some other country ready to switch on.  And if they don't I'm guessing they could get up in another country pretty quick with resources they have.

I don't think we have a good estimate on this.  There is a thread and some who have had it.  But we really have no idea on  percent with B8 failures as we don't know how many units worked fine.   

I got a B8 for fun to see what was changed.  It's still working fine no issues.  But a downtime you are right is a big issue with difficulty jumping so much.

Coinwar is not great.  I highly suggest using https://bitcoinwisdom.com/bitcoin/calculator .  So much better with difficulty option.  Coinwarz is good for this period only.

As far as PSU i'm not sure on including it.  A lot of people have PSU's that last multiple miners.  And some like me have some that have already ROI'ed on.  And when I buy new I plan on more then one miner using a PSU over it's lifetime.  And I can also sell it one day if I want.

There has been nothing official that I have seen as far as a S7+.   Only thing I have seen is people talk about it as speculation.... but that does not mean anything.  The S5+ is a great miner they used it to get rid of chips quick and it did that very good.

So if Bitmain want's to release a next gen ... it's possible we might see a S7+.  But I'm not for sure on it really.  I think it's easier to just sell S7's then making a new product.

I would agree it's slowing down some.  Price has risen a little but not to the level of how fast difficulty is.  I think it will slow down a little until more get next gen gear... then I predict fast paced again.

So really hard to tell long term, and there is ofcourse having eventually.

It should be good for 3 month's.  I have luckily not dealt with RMA since S3 day's.   Honestly on batch 8 you should leave it at 700.  If you mention over/underclock that ruins warranty.  You have to get permission to do pretty much anything now.

I would email/send ticket/possibly contact US support if you are getting no where.  But they should respond to email.  How many units did you buy and how many had issues?