You can believe me or not:
I mine with an U2...
and my U2cloudmining system makes profit.
One U2 is not a cloud mining system I think most would argue. But even if someone said it is a cloud system I don't see the profit. How many are you saying are paying I did not understand your chart. Also what did the ones who paid pay? I have never said that my U2 is my U2cloudmining system The U2 is only my miner. My U2cloudmining system is the system to make profit arounf the U2 miner. it is like if you programme a site about goldmining in ALASKA and the system is about the "profit from the site about goldmining in ALASKA" So far the system has made nice profit...but the miner not yet...even if in the future it will make few satoshi(it made over 30000 satoshi but it has not yet reached the minimum payout)(lol) But it does not matter because the mining production is only a little little part of income. if people ask me about an U2... I tell them that they have $10 to invest, It is better to invest in my U2cloudmining system that in an U2 and mine. I don't see you having a cloud of U2's though. I thought on one point of the forum you said you have 1 only, but I could be mistaken. How many people have you sold the 10 dollar pitch to? Are you saying they split a U2 with other people? That is such a tiny amount of hash for amount paid. |
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The miner you linked to is 3.85 gh/s You claim to want 100,000 th/s To get anywhere near that speed you need either latest or next gen equipment and a lot of it. It doesnt come cheap so may be worth mentioning your budget. p.s. it seems to me you are mixing gh/s with th/s Those are OLD. You do not want those OP. I still warn jumping to 100 T is a decent amount of work and I think you should be taking it slower. With your electicity at 0.088 you really need to get new gear if your going to do this. Your options are really S7 or Avalon 6. Those two are you are choosing between realistically. |
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Hey guys,
i am reading this Board for quite a while, and now, i have a question and need your advice.
I want to buy a S7.
My local dealer has 2 Batches in Stock: B2 and B8 (please donīt ask my why)
As i donīt want to buy at Bitmine site (mostly because of the customs in Germany i think) i would like to buy one of the Batches.
He offers:
S7 B2: 1299/$1411 (4,66TH/sec)
S7 B8: 1369/$1487 (4,73TH/sec)
Is the B8 worth the higher price?
Is there anything where one is better than the other?
I read a lot about it but in the end i am a little undecided
I would really appreciate your Opinion.
Thank you in advance
Greetings
Mr. McSeth
The B2 would have more chips, and likely a little more efficiency. The B8 they have on a solid hashrate, but less chips and higher freq so lower efficiency. How does warranty work? That would factor in I would think on a B2 vs B8. But not sure with reseller. Is there any reason you don't want to do bitmain? B8 and B9 is substantially less there, you would need a decent vat to make the difference. |
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tested b8 on ~230v with dps2000bb and fans on ~50% and i get 1300w!
i shit you not!
Interesting I have not heard of others getting that good. If you leave fan on auto does it go back to 1400? I'm just curious if it's fan based or if you got one that somehow has better efficiency. |
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You can believe me or not:
I mine with an U2...
and my U2cloudmining system makes profit.
One U2 is not a cloud mining system I think most would argue. But even if someone said it is a cloud system I don't see the profit. How many are you saying are paying I did not understand your chart. Also what did the ones who paid pay? |
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With a 1000 bucks i would go for either some second hands 3x S5 with PSU
Or get a SP Jackson with PSU.
However don't forget to calculate your earnings.
Either a couple of antminer S3's or antminer s5's. I know spondoolies tech made good hardrware but I am with bitmain since day 1 and I know their hardware is one of the best, maybe even the best. I would not recommend to buy a S3 at. The S3 is what a S1 was 1 year ago. Ofcourse the price is cheap (80/90 dollar), but with this difficuly you will not get your investment back. It's just the nature of mining gear goes down in price the longer you have it. S3 you need really cheap electricity or free electricity at this point. For those lucky ones with free electricity they can get it and still profit. S3's are tanks and will be around for quite a while. Just are going to shift to lower electricity areas. Nah if you buy an Antminer S3 for around 80/90 dollar you won't get your money back. First of all you need to buy a PSU which cost money. Then check your daily earnings. With that in mind, the miner will need 1 year to even get ROI, by that time I doubt if all of them are still working... I think you missed the part of very cheap or "free". A S3 is still a solid miner it just is not nearly as efficient as new miners. There are still a lot that have "free" sadly I'm not one of them. But for someone who does a S3 still is a fine miner. And depending on PSU you could sell after, or use for another miner. |
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at almost 9c/KWH your electric rate is probably too high to be able to make enough profit to pay for ANY current miner on the market.
More hash doesn't help if your cost is higher than your income, or will be soon with difficulty increases.
If you don't CARE about profit, 20 or so of the Bitmain S7 units would work - might need a few more unless you have air conditioning of some sort available, Dubai gets pretty hot and you can't run an S7 at stock clock if the air in the room it's in is too hot.
If your farm is in Dubai, the cooling cost will also be high. It is better not to base your farm there. You cannot compete with people with 0.03/kwh. If it was not for heat he could do it I think, just is a different way of mining. You would mine for first part of release, then sell the miner after you are making less. If done properly/lucky possibly your mining + sell of machine = more then you put into it. But I think that near .10 area involves selling for chance at ROI. |
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So I'm planning to buy an S7. I understand that it doesn't come with a PSU so I'll buy that too.
What else? There is something called IO board. Should I also include it to get it working?
this will help you: https://bitcointalk.org/index.php?topic=1194785I haven't got an S7 myself, but as far as i understand, you only need the S7 + a PSU Make sure you do a profitablity calculation, and read up on the noise, heat, maintenance,... before you start mining! If you have 220/240 it's easier as it's nice to use a server PSU. Bitmain suggests using their PSU they sell. Keep in mind there are not many ATX psu's that do it all in one. I would start with where your putting it (keep in mind it's loud). Then would look at electricity and if you need cooling or exhust. |
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1293W is the power drawn at 12V side. +10% is added, when you calculate power drawn at wall, using Bitmain APW3-12-1600-B2 (effiency 93%) .
It's not that bad way to describe power usage.
It is 100 percent accurate you are right on that. They mention a range and it hit's in that range. It has taken a lot of flak though. If they would have shown specs with 1400 and a much smaller percent, it would have made people happier. In my batch 8 thread this was a hot topic at first as they did lose efficiency from earlier S7's in first bit of batch 8's shipping. |
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Unless you have some sort of privilege like cheap electricity and discounted mining rigs, then not really. Some people do it for fun still though.
No one does it for fun, this is a serious thing... Mining involves many serious factors such as the ability to run the network smoothly, and if someone does it for fun, then they are just making a fool of themselves... Even an S7 today would let you profit in a few months before halving, and you can even get much more if the price spikes... I do not do it for fun. I would like to earn some thing from the mining, in the mean time, I support the network. Bumping quite a old thread. Not sure it's worthy if it. I do it for fun and profit. I enjoy mining and like messing around with different miners. But yes I like not to lose money so I keep economics in mind aswell. So I think best is if you do for fun and profit. If just of them your missing out. |
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Can someone with Bitmain RMA experience or familiarity tell me the best way to get in touch with Bitmain. I need to RMA a defective board from Batch 9 and I've had a support ticket open for a few days now w/o response. I realize this isn't a support thread, but I see that several people here have been through the process of returning boards. There is an email for xiaorui.liu@bitmain.com on their workOrderGuide web page, but I don't know if that's for initiating a return. Thanks RMA requests are actually info@bitmaintech.com on email's. So I would send a email that way. I will warn they have got harder on warranty. Don' t take apart and try to fix or they consider it voiding warranty unless you had permission. |
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Have you thought about cloud mining? Plenty of people choose to do so. I personally prefer to have the miners at home since my electricity is cheap and 5 months per year I use the heat to warm my house.
For my first 4 miners, counting heat recuperation I have electricity for about 0.06 $US/Kwh
Cloud mining is full of so many scam sites it's scary. If you do choose cloud go over to hashnest, that is about as good as it gets. But I like to have mine myself as I like to tinker with the miners. There is initial setup costs with a mining area but if you are planning to mine long term it is not a bad investment. Keep in mind there is no ROI guarantees. I would also guess that many people were scammed on cloud mining. Given my electricity rates and my capacity to reuse heat I would have liked to host miners but it seems impossible until I get that many posts which grants me a better title in this forum. Meanwhile, I will keep reinvesting mining income on new miners. It depends there were a few that were legit that stopped due to miners costed more then what they made in cloud contract. So there were a few more, but vast majority were scam. With sticking with hashnest you know what your getting. And perhaps most important is you can sell at anytime. |
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Did some testing today with the batch 9 s7's that i just got. was wondering if any one has the same results?
So currently I don't have the Bitmain psu's just yet so i'm powering them with (2) 1000watt EVGA SuperNOVA G2's 5 Cables in each.
So far all 6 miners are giving me the same results so at least the power draw is consistent across the board.
I tested these on 2 currents- 208volt and 120volt Got different results in Amp Draw though
On 208 Volt I'm Seeing a 7 amp power draw per miner- which puts the watts at around 1450watts
On 120 Volt I'm seeing a 12 Amp Power draw per miner- Which puts the watts a little bit lower at 1440watts
Now on Bitmains website they list it as 1293+10% well 10% of 1300 is 130 add those two together and you get 1430 Which is pretty close to what im seeing on the pdu's
Let me know what you guys have found out with your own gear!
Thanks, Keegan!
This is not new news on this. Batch 8 was designed the same (besides io board). They really do mean +10 percent. Some of the earlier generations had more chips. And they got better efficiency. But b8 and b9 less chips and more freq = less power efficiency. |
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Have you thought about cloud mining? Plenty of people choose to do so. I personally prefer to have the miners at home since my electricity is cheap and 5 months per year I use the heat to warm my house.
For my first 4 miners, counting heat recuperation I have electricity for about 0.06 $US/Kwh
Cloud mining is full of so many scam sites it's scary. If you do choose cloud go over to hashnest, that is about as good as it gets. But I like to have mine myself as I like to tinker with the miners. There is initial setup costs with a mining area but if you are planning to mine long term it is not a bad investment. Keep in mind there is no ROI guarantees. |
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Hey guys! I'm a newbie, so I do not know much about bitcoins. Anyways, I was wondering how you mine bitcoins. Could someone please let me know. Thanks.
i suggest you to forget about mining bitcoins coz mining isn't profitable nowadays and you'll only lose money for it. if you really want to test how mining works, you can rent a mining rig from https://www.miningrigrentals.com/ and point it to your desired mining pool like f2pool or antpool more info here: https://www.bitcoinmining.com/getting-started/Renting normally costs more then mining itself in current one. If your looking at renting unless your trying a lot of hash to hit a block, I would just buy btc. I think your better off buying btc vs renting to mine btc. And most common is probley nicehash/westhash. If you really do want to mine through rental. |
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Ok, good to know, so could there be any alternatives? I've heard about cloud mining, but I'm not entirely sure how that works.
If your just wanting to learn mining look at compacs from sidehack, also RPI to run it vs a laptop is smarter on saving electricity. I would look twords this is your just wanting to learn mining. It will not ROI though it's more for fun. If your looking at ROI it's a another story and we need to know a lot about your electricity. |
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Yes you will want to get a PDU that is enough AMPs. So if you get 20 amp... you only need 20 amp pdu. If you get 30 amp I would get a 30 amp pdu. Either way you really need a PDU to distribute power to your power supplies from your 240 line. I would suggest checking ebay though. You can get PDU's at a great discount on ebay used vs buying new. I owe learning this from phil. But I saved a ton going to ebay. Is it safe to run 30AMP on a 30AMP circuit? Every breaker i have have a warning labeled "Rated continuous use is 80% of rated value". In this case that would be 24a i believe? I have never ran 30 amp on it. The big thing is it gets you a decent amount more then 20 amp. But you are correct I don't see running it at full 30 amp. Just like 20 I don't see running at full 20 amp. This is why I suggest he goes 30 as long as his panel can handle it. Also possibly will save him money if he does run 2X amps from having to get another line ran. I don't see dis-advantage with more as long as he can handle it. |
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Does those 2 boards report much higher temperature as a result compared to the 3rd hash board? Curious as I want to be able to spot these issues in the future if it happens remotely.
I think he got lucky. It would be very easy not to notice it, which is the scary part. And the heats sinks are made of metal so if they hit the wrong spot on the board it can be a very bad result. With 2 having issues Droid was there anything in common you noticed? Or just plan bad luck. I hadn't even tried to run them, I noticed as I was moving them the clanking.. I think they may have fallen off after placing them on their new shelf.. Maybe the litte thump from setting them down was enough to just pop off Interesting I'm glad you found it before any damage. That is kinda scary if caused from just moving shelf's. I was not guessing something as little as that was cause. Thanks for sharing. |
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While I didn't take Thermodynamics in school decades ago, I am 99% sure that every single watt that comes out of the wall ultimately ends up as heat in one way or another. Even the spinning fans produce heat of their own, as well as moving air.
A very small part of the wattage input into a miner get turned into usefull work communicating with the outside world, and does not end up as heat in the room the miner is in. On the other hand, that's probably something on the order of a very small FRACTION of one watt, so for PRACTICAL purposes the entire energy usage of a miner (and it's power supply, use an INefficient PS if you want more heat) gets turned into heat eventually. If noise is an issue, SP20E is the best option - set the fan to a "quiet enough" setting then let IT set the clocks. I believe at least some of the Avalons could be set up that way as well, but never owned one to try it. Avalon 4.1 are the best on sound no doubt about it. Nothing compares to them on how quiet they are. If you run underclocked especially it's amazing on how quiet it is. Below is one in action: |
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Does those 2 boards report much higher temperature as a result compared to the 3rd hash board? Curious as I want to be able to spot these issues in the future if it happens remotely.
I think he got lucky. It would be very easy not to notice it, which is the scary part. And the heats sinks are made of metal so if they hit the wrong spot on the board it can be a very bad result. With 2 having issues Droid was there anything in common you noticed? Or just plan bad luck. |
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