I don't think it will happen due to it will not stop the main thing which is those with super cheap electricity .... can mine cheap.  There would be mega mines of GPU's happening if we went that way.   So maybe shifts companies in the lead but still would be huge companies mining most of it.

I think we can see with ETH mining even gpu mining can have a decent increase in just a single month.   So same thing would happen if BTC went way of GPU.

I think mycellium with a hardware wallet attached to mobile is still the most "secure".   I don't think any software based mobile wallet can reach the security of that combination with hardware wallets.

Trezor is a good example of this - https://bitcointalk.org/index.php?topic=1298917.0

Why is ran out of money I think, they came to a point they were not near as profitable as past.  And again since we don't know internal happenings... we can guess but don't really know if management, bad R/D, or a combination of other things to.   Likely it was a combination of things.

Being in China on most companies does not really worry me a ton .   I think there still is one big company not in China with Bitfury, but most are based there on hardware manufactures. What worries me is the tighter margins on profits for most miners, this is something BTC really could use a move in value upwards.  

I think it's going to be hard in most cases to get a UPS/Used battery combo for a decent price.  Keep in mind were talking running up 2800 or so watts for 40 minute to 1:30 hours.  So that is a good amount of energy that needs stored.

So good idea looking for lower cost solutions.  But I still think you will pay more then what you make over that 40 minute to 1:30 hour per day.  Just a lot of cost for not a ton of pay I'm guessing in almost all cases.

What PSU's are you trying when you said tried different ones?  I ask as if it can run one blade... make me maybe look at power.   At least that is where I would look.

The odd thing is to have same problem on 3 antminers.  Are they new to you? Or have you had them and they suddenly stopped working?

Bitwisdom seems to be going down a tad:

Bitcoin Difficulty:    194,254,820,283
Estimated Next Difficulty:    198,989,385,899 (+2.44%)
Adjust time:    After 31 Blocks, About 4.8 hours
Hashrate(?):    1,671,940,273 GH/s

Value over this period was not the greatest move went from mid 450's to mid 440's.  So lost value on BTC - http://www.coindesk.com/price/

Most just do the pull on the back.  OP is wanting to psu to be reduced to though, so he might need to look into more of a box built to reduce sound.   As one duct for miner wont have PSU in it.   

I would agree with phil on don't mess with fan's changing them out.  In most cases with summer coming or here for some changing to lower RPM fans might not be the best of ideas.

It does seem to run good for me aswell I have had a variety of weather and no issues.  The one big fan with more RPM seems to work fine without issues for me.

On ordering from Bitmain Warranty they have their own site: https://bitmainwarranty.com/ .  When ordering there some of the things you get is shipping from US, phone number to call for warranty if any issues, and can even buy extended warranty.   But take a look it's all over on that link.

You research must have missed the part about different algo's.  Asics do blow GPU's out of water on algo's they can do, such as in bitcoin sha256.  But there are coins like Etherium that do not have asics.  So GPU's remain very profitable, currently they are a good investment in a lot of cases.

But right now Eth is pretty much the only GPU coin worth mining.  But I suggest doing a little more reading on different algo's. 

I agree it's keeping up with it pretty good.  I still just don't like the fact of how much hash is being added.   I feel more miners will come and it will continue, but hard to say where we will be in a month on difficulty.  Also commercial mining of it scares me ( http://www.coindesk.com/bitcoin-miners-ethereum/ ).   If there is big profit's seen (which there is) I would guess some bigger more commercial miners come along.  That article shows one good picture of a room of GPU's.

We had around 30 percent increase (approx) in a month, I don't know if that continues if price will continue to rise keeping up with it.  Don't get me wrong I hope it does and ETH does look good right now.

So far still running good here is a screenshot of after 10 day's:


Just for reference everything is still on default settings besides static IP, and my pool info.  But no problems or complaints about the S7-F1 it keeps hashing away.

Faucet users tend to be new and think they are getting more money then they do I think.  Sadly they figure out it is cents per hour... so very little payment.   Some think in X years they will get rich from these small payments, but it's unrealistic.

On last few post cloud mining is also mentioned quite a few times.  Sadly almost all cloud mining is scams at this point I would only point people twords hashnest at this point for cloud mining.

 But your free system is dust payments... so I'm not sure I consider it fast/free.  Sure free if you send a little out, but I think it's needs to be bigger to be considered "fast and free"  How much does your system on average pay a "free" person per month?

I think fast and free is harder and harder.  Sig campaigns at this point chances are the biggest, but if done properly it takes a lot of time.  So don't know if I say it's fast.

I don't know about this.  It is a good place to learn a lot of things like mining, altcoins, and ton's of other things.  But I really like sites like coindesk for quick news.   Granted I do read both, but I think there are some good sites that are better off for news.

But I would agree in a way "knowledge" is why many come here.   And is a good reason to stay.

Chances are you will be better off looking for a hosting center vs something that can power 2 S7's for up to 1.5 hours a day.   Your just talking about a lot of watt's and a long amount of time. 

If you look at battery backups I think you will see cost of one that is capable of this just will not pay off. It just will not make sense financially buying a system capable of doing what your looking for.  Also what country are you in?   Just curious with losing power so much.

If your losing internet on both your S3's and laptop sounds like network issue.   The miners use very little as far as network resources.  I would look into router to see why it's dropping internet on devices connected.

Likely you will need to contact Verizon and tell them about the losing of internet.   As we really can't help much on a Verizon router.

They made good equipment I will not argue with others on that the SP20 was a good machine.   It seems going into next gen was when it all kinda got bad.  Was it due to hardship in R/D of new chip?  Bad management?  I doubt we will ever know.

Difficulty of ETH scares me from going huge into mining it.  I will have a little bit of GPU's that keep going but difficulty is crazy - https://etherscan.io/charts/difficulty .   Currently though profit is pretty amazing I do agree, it allows even higher priced electricity to keep mining.

BTC i just want to see having and what it does.  It's really hard to speculate so will be interesting to watch,

I loved my S3's at the time they were tanks.   Truly was a great miner.   So I can see why some want a miner in this area, espically if in a home setting.  But now that I have a mining area I have to admit I like the big miners like the S7.

I could be in the few but I would rather have cheaper cost with big hashing speed.   I am more worried about cost then power needed to run.

Got mine aswell thanks Marco!