Takk for all innsats sturle! Noen som vet noe om regler for beregning av kostnad på en "minet" bitcoin? Dvs. hvordan skal gevinst beregnes på mining? Venter på svar fra skatteetaten på dette, spent på svaret. Angrer litt i grunn på at jeg tok kontakt  |
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 It's a sign! Block inc. |
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Holy shit that drop in datacenter is insane. Only 400 Sq ft for 12-16 PH/s!! But how many of those will actually be deployed I wonder?
If i could just get a 10TH/s immersion cooled small container I could run silently I would be happy.
Buy 2x S7's. Create a sealed container for the boards. Cover the boards with 3M Novec 7000 (heat sinks off/copper boiler). And find a way to cool down the Novec gas inside the container. Copper coil with running water/radiator or something like that. I'm currently planning something similar. If I can get my hands on some Novec 7000, I'm going to try it with a couple of S1 boards first, to figure it all out. Inspiration: https://www.youtube.com/watch?v=a_vJbGgxPTUIf anyone know where I can buy some Novec 7000, please send me a PM. I've tried contacting 3M, but haven't gotten a reply yet. Cheers |
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I doubt the container will have a huge effect - it just makes it a bit simpler for the BIG FARMS to move up a generation, but I suspect it won't be cheap.
Well combining the cooling solution on top of the containers with the miners does not make sense. Although it looks cool, but it would make it more costly if you have multiple of those containers. It does make sense if their using immersion cooling, with something like 3M Novec 7000 fluid. Then you would use cooling solutions like this to cool down the "water" their pumping into their immersion tanks. To cool down the Novec while it's in gas form. https://www.youtube.com/watch?v=a6ErbZtpL88 |
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National Electric Code, which is what wiring, outlets, etc are required to live up to in the USA.
Technically, it's not mandated nationwide - but every local and state jurisdiction I know of and have heard of incorporates it "by reference" into applicable law.
Never heard of a "type F" outlet, I'm guessing you're not in the USA.
I'm not in the USA. Here's a list of countries that uses this type of outlet: Afghanistan, Albania, Algeria, American Samoa, Andorra, Armenia, Aruba, Austria, Azerbaijan, Azores, Belarus, Bhutan, Bosnia, Bulgaria, Cape Verde, Chad, Croatia, Cuba, East Timor, Estonia, Finland, Germany, Greece, Guinea, Hungary, Iceland, Indonesia, Italy, Jordan, Korea, Laos, Latvia, Lithuania, Luxembourg, Macedonia, Madeira, Monaco, Montenegro, Mozambique, Myanmar, Netherlands, Netherlands Antilles, New Caledonia, Niger, Norway, Portugal, Romania, Russia, Saudi Arabia, Serbia, Slovenia, Spain, Suriname, Sweden, Turkey, Turkmenistan, Uruguay. ^^ It really doesn't matter what the plug looks like, I think I got my point across. I don't want any fellow miners to burn their house down. After reading up on NEC, it seems like you guys operate with 2 different ratings? Nominal rating and continuous rating? "Most commonly available circuit breakers are rated to carry no more than 80% of their nominal rating continuously (3 hours or more) (NEC Art. 100). 100%-rated circuit breakers are manufactured for and may carry 100% of their nominal rating continuously." I'm not quite sure how to read the quote above, but what you're saying is that all homes in the US got circuit breakers that are rated for 100% continuous load? Thats great!  PS: Anyone know why the [img] tag won't work? |
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Depends on how hard he's pushing the S7s and which batch and HOW EFFICIENT HIS POWER SUPPLIES ARE, some S7 setups are more like 1300 watt miners (3 of THOSE will fit into a 20 amp 220 circuit, power-need wise) but 3 of the late batch use 1500 watters or run lower-efficiency supplies is pushing it too hard for safety.
Perhaps I should have said "MIGHT" instead of "might".
Hint.
NEC specs electrical wiring and outlets and breakers for 24/7 operation.
Do keep in mind that the NEC applies to commercial facilities JUST AS MUCH as it applies to homes, and the spec is THE SAME for both.
It is NOT like pushing a common power supply to 100% continuous, the NEC code specs are quite conservative.
I'm not sure what that thing you posted an image of is supposed to be, it doesn't look at all like ANYTHING commonly used in a US power wiring situation.
Something European perhaps?
I have no idea what NEC is. A standard I guess? The image is of the insides of a wall mounted type f electrical outlet. It got hot because of a bad wiring job/stupid wire-connectors, and triggered by 100% load 24/7. It created a low "touch-surface"/little contact between the wire and the connector in the socket, which made it overheat. It was in a old house. So, whats NEC? |
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I have what you might call a "little server" in my home "basement." I changed my fiber for this one patch cords and since them my mining has been restrict, I do not know if the change of the patch cord could be related. To figure out if the cable is right, you need to know what GBIC's/what type of fiber transceiver you got. Is it singlemode or multimode? Was the old cable yellow? You also gotta watch the nm. (850 nm / 1310 nm) I'm guessing you got it right if you get a signal at all. Did you by any chance touch the tip of any of the fiber-tips with your hand? If yes, you could be experiencing packet loss. Do you get packet loss if you ping 8.8.8.8 or 8.8.4.4? I'm just throwing stuff out there, I don't really understand your question.  |
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Thanks a lot! This was a good read. |
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My friend ordered 1 unit 19.1. and shipped 21.1. (DHL)
My order 7x S7+PSUs was also 19.1. but unshipped yet (UPS)
So for my order from 19.1. still no shipping info. I really do not understand, why Bitmain some orders (which were placed at the same time) shipped almost immediatelly and some not (and all batch 9, paid via BTC) I pre-ordered batch 1 at the end of august, I received them 20 october, about at the same time as the batch 2 orders. My mistake was paying with USD, had I paid with bitcoin, I would have gotten them almost a month earlier. <- Lost about 7 BTC on this. Did you pay with $ or BTC?  And btw, I never received any shipping info or any emails at all, after I've sent them my money. The only communication I ever had with Bitmain, was getting the order details email. So don't expect any communication! ^^ |
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220 volt 20 amp is PLENTY to run 2 S7s on, if you have any sort of 80Plus rated power supplies.
With platinum power supplies or good gold ones, you might be able to squeeze 3 onto a 20 amp 220 circuit.
The efficiency difference you probably won't be able to measure, unless the wiring is VERY long.
"Might be able to squeeze", just stop for a second and listen to the sound of that.. IMO he could run MAX 2 1500W miners on a 20A/220V circuit, safely. For a safe setup, he shouldn't use more than ~70% of the circuts max rating, when running 24/7. This is what squeezing looks like:  Cheers, Jeremy  |
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Sorry for hijacking the thread but.. has anyone tried replacing the fans on the S7 yet?
Anything out there that can supply enough static pressure and at the same time be more silent than the originals?
Cheers.
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How would this be different from a normal small pool? Or mining solo, from a solo-pool? Because we are putting our money in together to increase the chances of finding a block & to minimize ones expense while trying their luck by themself. So say you have 1 BTC to spend (that is roughly 100TH for 24hours) if you have 5 people then that increases your chance 5 fold at 500TH although payouts will be made according to invested share percentage. We want to hit that 25 BTC block, imagine the profits if we do. Yes it does, but it also means you have to split the reward in 5. If 5 people were mining at a pool, it would be the same result. So I guess your point is to have a slightly higher chance of hitting the jackpot, withouth sharing the reward with too many people? I guess the title of the thread explains it all.. Got it! |
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Interesting topic!
Would it be possible to compare this data to different pools hashrate?
aka can you see which pool are mainly affected by drop in hashrate after difficulty increase? or is it evenly distributed?
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How would this be different from a normal small pool? Or mining solo, from a solo-pool? |
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1000W = 1kW
1300W = 1.3kW
1.3kW*24hrs = 31.2kWh per 24 hrs.
And no, you won't make a profit with those rates :p
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Pulling the air from inside the house, to heat a house. Wouldn't that make the air quality poor? I guess there is a reason why we have vents? |
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Yeah I would suggest the S3 or S3+. Great reliable miners. If you are located in the US, I have a C1 for sale. Its basically a water cooled S3 so its even quieter. Last winter I ran it in my living room as a heater and my wife didn't complain about it. https://bitcointalk.org/index.php?topic=1202317.0s3 even overclocked doesnt generate that much heat:( even s5. shame. So far only KNC titan was nice heater. anyone tried butterfly monarch? I heard they generate a lot of heat The thing that matters is how much watt the miner consumes. All the electricity that are pushed through the miners, are converted into heat, as a bi-product. The only exception is the electricity that drives the fans, which are turned into mechanical energy (moving the fan around). |
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Very interesting. Could you post photos?
Do you accept visitors to check out the place before hosting hardware?
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Honestly at first it will be crazy loud and you won't be able to stand it but eventually you will get used to it and your mind will just filter out the noise and you can probably sleep in it. I live in a noisy city so the miners actually help filter out cars and people talking outside.
But for an S7, you will need to add a muffler or two or undervolt it.
Get used to it, aka damage your hearing. No, you can absolutely not sleep in the same room as an S7. Search youtube for "antminer s7" and listen for yourself. |
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