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1921  Other / Beginners & Help / Re: Making backup's suggestion on: December 12, 2015, 11:27:54 PM
Well, I use save my private keys in a password manager like KeePass and save it with a password. Then I export the storage file and save it on a stick or even at an end-to-end encrypted cloud provider.

Are you saying you keep your backup on the "cloud'?  Even encrypted... I would NEVER store online.  Just a bad spot if that is what you mean.

Look into offline options.  It's much better offline then cloud will ever be.

Having a wallet, like Multibit HD automatically save an encrypted copy of your wallet to a cloud is actually good security, since you have very high redundancy and you also have your words to recover your wallet. (Recommended by the devs)

And of course, your wallet is completely uncrackable, as long as bitcoin itself remain so.

The problem here is the way the previous user recommend doing it. That would be a very bad way to do it.
1922  Bitcoin / Mining speculation / Re: Budget: €200 - Which miner should I buy as a beginner? on: December 12, 2015, 11:25:17 PM
An advantage that I have is 'free' solar power, with that in mind it might still be profitable?
How much free power do you get from solar? The requirements for any decent mining rig is too high for a normal household solar setup.
I'm still connected to the regular power network.
In total I get around 4 to 6 Kwh per day, some of which gets used, excess is sold to the power company.

An advantage that I have is 'free' solar power, with that in mind it might still be profitable?
How much free power do you get from solar? The requirements for any decent mining rig is too high for a normal household solar setup.

Hes going to need free solar.  The bad thing about Europe is the vat/import tax.  It can be a big amount. 

So prices of miners in Europe normally are higher then say US.  With 200 you might get S3 or something in Europe do some ROI math though.  I don't think you will get to much newer then S3.  But I could be wrong.  I don't think I am with how Europe is higher on miners.
I've been searching a bit and it might be a good idea for me to look for some S3's, with some luck I might be able to get two S3's for around 200 euro

I'm not sure how much you're getting for your extra electricity you're selling back, but i'm thinking with the average cost in the EU zone of electricity, its very probable that selling your excess electricity will be more profitable than running old BTC hardware.

So just keep that in mind, depending on what your goal is.
Just interested in the technical side behind it all, looking to do some solo mining just for fun.
So I don't really mind if I'm not getting the best ROI possible with my entire set-up in the beginning.

I'd recommend something smaller for solo mining, since there is not a big difference in odds of mining with a small stick (10GH/s) that consume 2 watts versus 900GH/s that consume 750~ watts, but the later's cost will add up fairly quickly.

I'd recommend a Sidehack stick for little ongoing costs. An undervolted S1 for low initial costs @ 90-140GH/s @ 80-160Watts and THEN a single S3.
1923  Bitcoin / Mining speculation / Re: Gigantic difficulty jump of the last few days (speculation) on: December 12, 2015, 11:22:05 PM
Maybe it could be possible that BITMAIN has increased the shipping rate of the Antminer S7's.

We can guess all day long.  But wer really don't know what it is.  That is part of having a industry where most companies are private.

There is open as far as blockchain.  But what companies have or are doing in most cases is not a open book, they want to be ahead of competition.

We've "tracked" the S7 being bought by guessing based on how much BTC was sent to Bitmain. At worse its only a portion of the hashrate. There's other factors, other companies onlining a whole lot of hashrate. The next thing we could do to get a better idea is look at which pool got the hashrate gain. BitcoinCZ only went up 4PH/s in the last month.
It seems that big mining companies are not using public mining pools to mine. They have their own private pool or are solo mining.

The highest possibility is that they own a private pool.

All the same. If a "private pool" suddenly pop up with 10% of the network hash, then we know. From there we can probably figure where the mine is in the world.

Considering the unknown block % is under 1%, this is not the case;
https://blockchain.info/pools

And thus by simply comparing which pool has the hashrate now vs 1 month ago, we can instantly know where the hashrate went. Although its hard to tell where it came from.
1924  Bitcoin / Mining speculation / Re: Budget: €200 - Which miner should I buy as a beginner? on: December 12, 2015, 11:17:07 PM
An advantage that I have is 'free' solar power, with that in mind it might still be profitable?
How much free power do you get from solar? The requirements for any decent mining rig is too high for a normal household solar setup.
I'm still connected to the regular power network.
In total I get around 4 to 6 Kwh per day, some of which gets used, excess is sold to the power company.

An advantage that I have is 'free' solar power, with that in mind it might still be profitable?
How much free power do you get from solar? The requirements for any decent mining rig is too high for a normal household solar setup.

Hes going to need free solar.  The bad thing about Europe is the vat/import tax.  It can be a big amount. 

So prices of miners in Europe normally are higher then say US.  With 200 you might get S3 or something in Europe do some ROI math though.  I don't think you will get to much newer then S3.  But I could be wrong.  I don't think I am with how Europe is higher on miners.
I've been searching a bit and it might be a good idea for me to look for some S3's, with some luck I might be able to get two S3's for around 200 euro

I'm not sure how much you're getting for your extra electricity you're selling back, but i'm thinking with the average cost in the EU zone of electricity, its very probable that selling your excess electricity will be more profitable than running old BTC hardware.

So just keep that in mind, depending on what your goal is.
1925  Bitcoin / Hardware / Re: Corsair CX750W - Whats the max watts per PCIe connector ? on: December 12, 2015, 11:15:05 PM
I got some older miners I want to overclock a little since miners are more profitable now then before. Just wondering what is the safest wattage per PCIe connector? I am using them on older KNC Jupiters.

I know that with an SP20, which uses 1200Watts you can pull 400Watts each and not have the connectors melt. But with some KNC Neptunes running 400Watts melts the connectors.

I know that 150Watts is save due to GPU standards so with efficiency about 175Watts from the wall is safe. What about 250Watts from the wall? 300 Watts ?



300 watts at the wall means 260 watts or so with .8 efficiency. Thats should be okay. under 200watts is probably better because you want the wires to stay cold, but the limit is anywhere from 200watts to 290watts. Some can even do a bit more. (Or less if they are really crap)

But this is an answer you will find yourself, you simply plug it in and check if the connectors get hot. If they do, they're bad.
1926  Economy / Service Discussion / Miningrigs Rental, Smaller rig better? on: December 12, 2015, 11:01:51 PM
So i'm looking into getting a tiny bit more from my rigs and maybe more stable payouts.

So i'm wondering should i make a rig for each miner, or do people prefer if i bundle up several S5? Is there a sweet spot of TH/s per rig?

Any recommendation to make the most of renting out these? Thanks.
1927  Bitcoin / Pools / Re: *** GHash.IO mining pool official page *** on: December 12, 2015, 10:40:23 PM
I have not used GHash.io for a long time, i am trying again because i was told ASIC Tubes don't act up when pointed to this pool.

I can't find a auto payout feature, i'm just worried i could have a old BTC address already set that i no longer control.

Is there just not one?
If there is, where is the auto payout option? Thanks.
1928  Bitcoin / Mining speculation / Re: Gigantic difficulty jump of the last few days (speculation) on: December 12, 2015, 10:07:36 PM
Maybe it could be possible that BITMAIN has increased the shipping rate of the Antminer S7's.

We can guess all day long.  But wer really don't know what it is.  That is part of having a industry where most companies are private.

There is open as far as blockchain.  But what companies have or are doing in most cases is not a open book, they want to be ahead of competition.

We've "tracked" the S7 being bought by guessing based on how much BTC was sent to Bitmain. At worse its only a portion of the hashrate. There's other factors, other companies onlining a whole lot of hashrate. The next thing we could do to get a better idea is look at which pool got the hashrate gain. BitcoinCZ only went up 4PH/s in the last month.
1929  Bitcoin / Mining support / Re: Antminer S3+ support on: December 12, 2015, 10:00:44 PM
Hey guys!

I've some questions and I hope someone can give me an answer and help me.

My Antminer S3+ is beeing powered with a Corsair RM850 and working 218@stock voltage whitch gives me an avg 440 (0% HW errors). I tried some new settings like 225 and 250 but i got some HW errors (0.043%) and the same hash rates that i got at 218.

I tried different firmwares and kano's cgminer but i got the same results.

Does someone have a possible explanation for this? Smiley (maybe a batch 1?)

Best regards

btw: kano's cgminer sometimes reports 700+GH/s, is this normal?

I would check the voltage at the Miner's PCI-e plug. Some S3's are simply icky, they dont clock well, but either way, the reason why you can not bring it to 500 is its not getting the voltage it wants.

Some are better than other as in they can go higher with the same stock voltage. But some PSU's voltage output drop under load, which worsen the condition.

(btw) Also yes, variance is normal.
1930  Bitcoin / Mining speculation / Re: Budget: €200 - Which miner should I buy as a beginner? on: December 12, 2015, 09:56:03 PM
I'm new to Bitcoin mining and I was wondering which miners I should buy to get started?
I would have them shipped to Belgium, so if anyone from Europe could recommend a store that offers relatively cheap shipping, that would be nice.

I'm not expecting to make huge amounts of Bitcoins with this, it just seems really interesting to get started with.
An advantage that I have is 'free' solar power, with that in mind it might still be profitable?

Thanks for anyone willing to offer me any advice!

I can give you a great advice; Don't buy from stores. (Most retailers have bad to insane markup) You can look at Ebay, sometimes you *can* get lucky and find a miner for cheap.

If you have free solar power you're not using or selling back to your power grid, then you could look at a S3, i think that would be the best bet with your budget and not a bad miner at all to get started.

Just keep in mind if you step up to S4, S5 or S7 etc, the noise will go from x8 to x32+

You might be able to get 2 S3 if you're lucky. Getting a S5 would be hard. S3's go for 100-120USD right now.

Better than anything else is probably going to the marketplace and try to find a buy here. And use escrow.
https://bitcointalk.org/index.php?board=75.0
1931  Bitcoin / Mining speculation / Re: Avalon 6 Vs Antminer S7, which one you will choose? on: December 12, 2015, 09:53:18 PM
Both look very good. But getting used to bitmain makes me go to choose the antminer s7. But i would like to try the avalon too. Both asics are priced ok, in perception of the current bitcoin price. So yes it is a nice invemestment.

The downfall offcourse is the difficulty which is sky rocketing.. Best to wait for the next gen. miners.

Touche, the current miners won't earn enough to get a decent ROI. The difficulty is just increasing too much which makes the current batch of miners not profitable.
I think bitmain will launch a new miner around feb/march. Till then keep your bitcoins as bitcoins, as in don't spend them on these asics.
2) As mentioned in the main S7 thread, BITMAIN is now charging 3.1 BTC for a batch 8 S7. Very curious language used in the description: "4.73th/s is the final version of S7 which is more stable."

I think it means what it says, which I interpret as. After much messing about they have finally settled on the 135 Chip System, 15 Node string and I am still assuming a Buck Converter such that they are not dependant on such a tight spec for the PSU? Whether they have been selecting BM1385 or not and if that is in any way a factor going forward I do not know?


Rich

That price sound more reasonable, still would not be a sufficient enough decrease, if the difficulty keep climbing like this.

Also i don't suppose having a buck converter would mean working software side volt control?
I'm looking into lee's latest group buy of $1150 for the last batch S7 (4.73 Th/s), but it launching Jan 27th, 2016 has me a little worried what the difficulty will do by then.

So basically, a Smart strategy;

Step one is "Wait 1-2 Months for difficulty to stabilize". Step two is "Buy the S7's Americans and CIE when they panic sell because they can no longer ROI before halving. At half price, of course."
1932  Bitcoin / Mining speculation / Re: How do you get free power? on: December 12, 2015, 09:49:33 PM
Some of the users on this forum made posts where they claim to get free power, where do they get this power from?

Suppose, if you have an antminer s7, it can produce 1btc a month.
1btc is around £200.
Hotel accomodation, per night, including electricity and internet: £40
200x6=1200
1200/30=40

So for 6 antminer s7s, you get around £1200 a month.
Convert this into money and you have £40 a night!
Purchase about 10 s7s and you have got yourself £800 a month or more than £20 a night!

Not so bad but needs a high capital!

what a moron brain could ever think that?

And the staff will never wonder why you never let them clean the room or the loud noises other rooms complain about....

It's a idea that will never work.  Hotels are not meant for ton's of electrical usage. You would really surprise me if you could do 6 S7's in 1 hotel room.

They probably wouldn't make too much noise, and If they did, you would be able to try and drown ehm out or even place them in the cupboard. There would be enough plug sockets, I think. Why would staff get suspicious about not being able toclean a room, also, if you book somewhere like a premier inn or travel lodge, they don't tend to not clean the rooms on daily basises anyway!

Which miners have you ran personally?  I don't think you get how loud some can be.  And putting in a cupboard..... would trap exhust with miner so it would be like a box of death getting hotter and hotter.

This will not work in hotel in 90 percent of cases.  And if it does... chances are you paying more for hotel then you make with miners.  They are not geared for a lot of electricity.  And actually chances are you would try it in a motel not hotel.... and it could be one nasty place.  But still not going to get you cheap electricity after paying for room.


Just give them the oven example. When the oven door is closed, the heat go way up and it cook your food. That is identical to what would happen to your miners, they would cook. I'm meeting a lot of people, even IRL that want to get into mining and thats what they usually say;

"Just put it in the storage room." (That has no window or air flow)

Last one yesterday, chained with "I'll just put an AC there" which would just generate more heat since he did not have a way to dump the heat outside. He was going to leave the exhaust in the storage room as well.
1933  Bitcoin / Mining speculation / Re: no incentive to mine, electricity costs > than profit whats the point? The dev- on: December 12, 2015, 09:44:47 PM
its put me off ill stick with mastercard no incentive

Not sure what you're talking about. The BTC price is so high right now, even old hardware like S1 is being profitable again, even in the US with their High electricity cost.

I recommend you redo your math. Right now, it is crazy lucrative to mine.

What you're asking can't happen for so many reason, but i'll name one reason; Because its working just fine.
1934  Bitcoin / Mining support / Re: Antminer S7 and EVGA SuperNOVA 1300 G2 proper cabling on: December 12, 2015, 09:43:18 PM
hi - thanks for reply.  I tried what you have suggested, and still the S7 won't turn on.  I've also tried another config, using an extra EVGA 1300w.  I power 2 boards with the first power supply, and the 3rd board and the controller with the 2nd power supply.  No signs of life at all.  Any other ideas?  Is there anything that needs to be done to the S7 before powering on?  This is my first setup.

Ahhh. Did you turn on the PSU's? The pin #4 (green wire) need to be jumped to a ground to tell the PSU to turn on, the same way the PSU turn on when you press the power button on a PC.

http://www.instructables.com/id/How-to-power-up-an-ATX-Power-Supply-without-a-PC/
1935  Economy / Computer hardware / Re: [WTT/WTS][Canada]3x AM Tube on: December 12, 2015, 09:32:43 PM
Hmm, pools eh, what pools you run them on? Have you tried GHash.io? For some reason Tubes work best with ghash. Give that pool a try for a bit and see if they are stable.


I have been running them on BitcoinCZ, running them on Nicehash was a no go. And with the SHA256 being paid lower than standard there anyways...

So i will try GHash.io if they start acting up again. They have been running fine since i decided to go with GHash.io if they act again. They can be fine for 1-3 days (so far) so its going to be hard to tell if using that pool would really fix it.

Meanwhile i'd still trade them down hashrate wise for better efficiency because i've capped my Amp limit on my circuit. Cheers!
1936  Other / Beginners & Help / Re: Making backup's suggestion on: December 12, 2015, 11:47:05 AM
I would just go for a HD Wallet and store the words safely. That way its much safer since you can recover every address you ever make after that, instead of the pre-gen'd limit in normal wallets.

I compress the wallet.dat file with 7 zip using encryption, then back up the files into usb disk. Is 7 zip encryption safe?

Not as much, but if you run it with the proper AES encryption, it should be strong enough. Just make sure you don't mistake common passworded archive with encrypted.
1937  Economy / Computer hardware / Re: [WTS] Spondoolies-Tech SP31 - US Shipping on: December 12, 2015, 11:32:18 AM
Bump

Price updated to 3.6 BTC including shipping to US.

Price of S7 is now 3.1BTC, might be something worth taking into consideration here? The miner values are dropping like rocks, with the difficulty skyrocketing.
1938  Bitcoin / Mining speculation / Re: Avalon 6 Vs Antminer S7, which one you will choose? on: December 12, 2015, 11:29:28 AM
2) As mentioned in the main S7 thread, BITMAIN is now charging 3.1 BTC for a batch 8 S7. Very curious language used in the description: "4.73th/s is the final version of S7 which is more stable."

I think it means what it says, which I interpret as. After much messing about they have finally settled on the 135 Chip System, 15 Node string and I am still assuming a Buck Converter such that they are not dependant on such a tight spec for the PSU? Whether they have been selecting BM1385 or not and if that is in any way a factor going forward I do not know?


Rich

That price sound more reasonable, still would not be a sufficient enough decrease, if the difficulty keep climbing like this.

Also i don't suppose having a buck converter would mean working software side volt control?
1939  Economy / Service Discussion / Re: What is the best cloud miner atm on: December 12, 2015, 08:09:43 AM
Are you aware that all cloud mining sites right now were mostly ponzi schemes? If not you should stop asking for the "best" cloud miner right now. Maybe there will be one or two legit ones left, but I doubt they will be profitable.

Cloud hosting services that are legit? Probably GHash.io and Bit-x? And definitively legit, Hashnest.

The problem is the fee structure is made so that they will earn money off people who buy the Hashrate. The fee is generally around 8-10cents per kWh and that take out all the juice out of the meat, so to speak. I'd mine/host at 0.06$/kWh or under.
1940  Bitcoin / Mining support / Re: Antminer S7 and EVGA SuperNOVA 1300 G2 proper cabling on: December 12, 2015, 08:05:55 AM
hi there - I have more or less the same set up.  1300 G2, with Antminer S7.  I'm using 2 Startech PCIEXSPLIT6 as part of my setup, and attempting to power with a typical US wall outlet.  The power supply runs fine in test mode, but I get no signs of life when I connect it to the S7.  Any ideas how to make this work?  Thanks.

Try without the splitter, 2 PCI-e per board and don't forget to power the controller with a PCI-e too. Just to see if it works. IF it works then plug all the 10 sockets.

Those splitters at the store i can see are extremely expensive (20$) and they're pretty icky considering they're 18AWG. You can get 16AWG on the forum for 3.5$ per splitter.
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