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Did anyone else buy a C1 during or after the holiday and has it shipped?
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Can recovery from a long holiday in China take more then a Monday and Tuesday?
Post-communism capitalism required a lifestyle change. Long vacation - workers mind set shifts back to the iron rice bowl days and don't bounce back right away.
I had a friend with whom I played chess weekly. He was from the central south region of China. He explained to me what it was like working with guaranteed employment. On a nice day he would decide to leave for the park and sit in the sun. His boss would insist he go back to work. He wouldn't. So, a change from such a mind set might be difficult and could crop up again after long holidays. ---------- And I just learned it's possible that post-holiday shipping may be bogging down export. |
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.23 cents per kwh? really?? as in less than a quarter of a penny per kwh? can that even be true?
it's not. It's $0.023 per kWh. Closer to 3 cents with taxes & other charges. Could they be near an old nuclear reactor power station? I think rates are low near Three Mile Island and others. I recall on LI the Shoreham reactor saw very low rates in the immediate area but any meltdown threatened a very wide area - so the low rates were to influence locals not to compensate for threat - sorry, I get carried away.... |
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Can recovery from a long holiday in China take more then a Monday and Tuesday?
Post-communism capitalism required a lifestyle change. Long vacation - workers mindset shifts back to the iron ricebowl days and don't bounce back right away.
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Not the most complete description but I take it there is an inflow and outflow pipe pair to the tank moving the Novec to an external radiator to exhaust heat and a second inflow and outflow pair to the condenser also to an external radiator? Ah, found it. One gallon offered for sale @ $379.95.
This is off topic but the Novec fluid doesn't get pumped anywhere. This video should explain it better. https://www.youtube.com/watch?v=a6ErbZtpL88Back on topic. Bitmain, I'm ready to purchase more S5's. With the price of BTC creeping up I think it would be worthwhile. See, I don't understand that. If it's an enclosed system and the Novec evaporates off the ASICs dropping their temperature, that energy is in the Novec gas. If it condenses within the enclosed container as it must or it's lost, that energy must be released. The energy wouldn't leave the enclosed container and its temperature would build. He says he might heat a driveway. So, is taking the heat out via whatever fluid is circulating within the condenser enough to remove all the heat? The fluid vapour is cooled by water. And the cooled condensate dripping into the lower chamber with the boiling Novec is sufficient to keep the major volume of Novec from rising to a high temperature. I see how the cool condenser would be sufficient without a running fan to condense the Novec. My thought was that an additional cooling of the liquid would be needed. So, say 4 boards of an S5 cooled in this way would need a minimum of how much Novec I wonder. |
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depends on how much fiat one btc buys. people still need to pay for electric and it doesn't look like they'll be taking btc as direct payment anytime soon. i think a lot of people will be selling their equipment in the weeks prior to the halving.
I think it actually is worse. Even if the electric company, and landlord, and employees, accepted Bitcoin would they want a 50% "pay cut" after the halving? As a miner your production of blocks remained the same, you just get 1/2 the reward. I have this mental image of the "farm manager" going home on Friday, the halving happens over the weekend, and then he returns on Monday to realize that his "gold mine" has been reduced to a "trickle". Yes this is an overly dramatic view, but I can't think of a single other industrial enterprise where that kind of thing happens "overnight". I expect when the halving approaches, things will get crazy in the mining business. Pretty much my thinking of the overnight effect as well. The last period of the era date on the Wiki will give us an inkling when to expect that halving. If the value of the bitcoin is going to vary as a result of operational costs to miners, and it might have to if it's to survive, is there any parallel in the fiat world? I mean aside from Poland not being able to buy its printed currency from the printing house in G.B. that time. |
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Not the most complete description but I take it there is an inflow and outflow pipe pair to the tank moving the Novec to an external radiator to exhaust heat and a second inflow and outflow pair to the condenser also to an external radiator? Ah, found it. One gallon offered for sale @ $379.95.
This is off topic but the Novec fluid doesn't get pumped anywhere. This video should explain it better. https://www.youtube.com/watch?v=a6ErbZtpL88Back on topic. Bitmain, I'm ready to purchase more S5's. With the price of BTC creeping up I think it would be worthwhile. See, I don't understand that. If it's an enclosed system and the Novec evaporates off the ASICs dropping their temperature, that energy is in the Novec gas. If it condenses within the enclosed container as it must or it's lost, that energy must be released. The energy wouldn't leave the enclosed container and its temperature would build. He says he might heat a driveway. So, is taking the heat out via whatever fluid is circulating within the condenser enough to remove all the heat? |
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It's been done large scale. https://bitcointalk.org/index.php?topic=346134.0And small scale. bobsaq3 and sidehack are spot on at stock/factory clock rates. We prefer to allow a little more head room for OC'ing the Prisma's and hence have migrated to one DPS-1600BB per Prisma. OC'ing a Prisma only makes financial sense if the cost per Kwh is low ($0.08/KWh or less). Then there are the heat dissipation issues that come with filling a room/Data Center with OC'ed Prisma's. Pursuant to that we are prototyping Open Bath Immersion (OBI) cooling using the 3M Novec Engineered Fluids in custom built polycarbonate immersion tanks. With the ultimate goal of immersing 32 OC'ed Prisma hash boards, controlled by an RPi w/wireless, in an OBI tank powered by 5 DPS-2000's. Power consumption should be ~10Kw per tank and dissipate ~32K BTU continuously, enough to heat the average American sized home in a Minnesota winter AND GET PAID TO DO IT. The residual/excess heat could be used to heat a garage, heat a driveway, heat sidewalks, melt snow off of the roof, heat a pool/hot tub/fish pond, etc. . . . . . . Our Youtube channel (PlanetCrypto) has some videos of our initial testing. Initial testing of 24x Tube Erupter boards in a Walmart fishtank: http://www.youtube.com/watch?v=meOf0FJBkGAhttp://www.youtube.com/watch?v=y_yfHJ8yoh8A polycarbonate immersion tank with 2x Bitmain S3+ hash boards: http://www.youtube.com/watch?v=gcb9TyQP5ZAhttp://www.youtube.com/watch?v=fStHV_Q-x7sWe no longer power the fan in the S3+ tank as it is not required for condensation. The heat generated from the S3+ tank supplements the in-floor heat in our little DC. We have laid PEX in the ground outside the DC as a place to dump excess heat in upcoming expanded systems. When we get a 32 Prisma board system up and running we'll post some vid's on the channel. I have wanted to do it myself and have come up with a few designs for tanks, but don't have the capital to get started. Good luck. Not the most complete description but I take it there is an inflow and outflow pipe pair to the tank moving the Novec to an external radiator to exhaust heat and a second inflow and outflow pair to the condenser also to an external radiator? Ah, found it. One gallon offered for sale @ $379.95. |
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Maybe they meant to say 500 hour?
 ))))) any more problems with the aluminium corrosion? Bitmainwarranty always replaced my bad pumps quickly. Even gave me an extra one just in case, so I cannot complain about the warranty service, but I have a funny feeling they knew those pumps weren't very good. Everytime I used one of those pumps I would get air pressure build up, foam, bubbles, and noises. After switching to that no name pump on Ebay the loop has been sealed, no bubbles or any type of issues. Strange. You are lucky then. With ordering direct for syscooling like told in batch one I had to deal with them on RMA's. Except for a connector loose - casual contact caused separation, fixed with tape - my one pump has been just fine. And my distilled water has been running quite clear. If it hadn't been required this time to buy two I would have gone with it again no problem but listing a single purchase was told Out of Stock. Not even sure if buying two would have made them available. |
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And now the question of the day: Who manufactures the S5 fan and what model?
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Original shipment is fast from them. But you will pay a premium for this service.
I suggest getting another pump, and a molex to 3 pin power adapter. My original pumps 2 out of 2 died. One got lost for a month in mail other just a tad over a month. The pumps are just horrible no way around it.
Do not buy Syscooling.I ordered 2015-02-23 from syscoling SC-750WATER PUMP and SC-BC2 antiminner cooling kit . http://shop.syscooling.com/goods.php?id=26http://shop.syscooling.com/goods.php?id=46Total products money: $185.00 + Shipping money: $137.50 + Poundage: $13.40 Shipping status is still : Preparing This is not a quick service or fast shipment. Thanks. I appreciate that. I will find an alternative. ----------- Okay, just bought this: PC Liquid Water Cooling 360MM Aluminium Radiator Thick 35mm With Red LED Fans on ebay for $89.99 free shipping. Waiting on a reply on the $18 single radiator that appears to be sold with a fan and grill. I have a good length of thick air hose from Lowes so I just need a pump. Correction, probably need G1-4 barbs. Okay, bought a pump from China. If it doesn't arrive in time I'll run to the junkyard and get a windshield washer pump to use while waiting that I can later use for pumping water atop an outside radiator. |
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Well Tupsu's suggestions won't work. I'm against the wall on power used while still keeping in mine that I need AC this summer here in rural Georgia so a second C1 this order is out of the question. If fact I've been buying power supplies and getting ready for an S5 but gave up after considering when btc reward might go to 12.5/block-discovered and that the S5's have remained Sold_Out well more than a week after the holidays ended. The S1 fan air cooled solution I don't have the parts for.
I'm looking at these: "G1/4 120mm Aluminum Water Cooling Cooler Computer Radiator Fans For CPU Heatsink " on ebay if actually all inclusive, grill, radiator and fan. Intending to use 3 in a window and a fourth outside with water flowing over for evaporation - the last's fan expected to be sacrificed from water exposure over time.
I'll have to buy some fittings and pumps. I expect metric threads and don't suppose Lowes will carry.
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Just bought a C1 batch 3 without the cooling kit. Am now trying to decide what to do about cooling. Started buying from Syscooling but choked on complaints of non-tracking and the shipping fee to the US. I want to have some cooling ready when the miner arrives.
Is Syscooling fast enough and dependable?
What have most others here done when faced with this decision?
Thanks in advance for advice here.
soy
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There's more complaints about the stock S5 fan noise than the C1 fan noise. Not the same fan?
Not the same fan. The S5 is the same as the S4's, the C1 is the same as the S3's. Wonder if the S5 fans have the same bolt pattern as those on the C1. Summer coming and better cooling might be good. |
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So, miner manufacturers are making their most efficient miners unavailable except as bare ICs with which to design and build one's own miner or available as a 'buy a share of my farm running these efficient ASICs.'
Like Bitmain. Many of us expected to buy an S5 post-Chinese New Year. _Not available_, _Sold_Out_. Now I'm wondering if it would be worth it at all! I'm at a state of cashing in my mined bitcoins to pay the electric bill. Profit is a slim margin helped by the non-burning of propane for heat this last winter. Now I'm wondering if payoff of a new miner, after deducting electric costs and taxes, can ever be achieved! Bitmain still offers C1's for sale but my C1 uses more power than I'd like.
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Difficulty will only drop if a lot of farms turn off their gear. It's likely that most folks will be mining at a loss for the first period after the halving. What sucks is, since mining only alters the total supply by a fraction at a time, the supply/demand curve won't be moved very much at all by the halving so it won't have much effect on the exchange rate.
Using the same argument, why don't you think that most of the miners are alreayd giving up(looking at the low prices ) ? Shouldn't we also expect a drop in difficulty right now ? This doesn't seem to indicate that. Shouldn't the hash rate actually go down knowing the sites like C_Cex shut down mining. I expected to see a drop in hash power as well. Yes. My point of showing the graph was that not many miners are quitting due to the low prices. But, that won't be the case on the day reward halves - perhaps as early as Jan. 2, 2016. That day it won't be a case of the home miner wondering 'Well maybe the price has dropped a little below the cost of mining but the price could go up and then I'll be kicking myself for not mining bitcoins that now would have a value greater than their mining cost'. No. The off switches will be flipped and home miners will wait for the value to rise to profitability. Same with large commercial farms that are operating in a hotter climate with somewhat better electric costs. An interesting question is what happens to the buying and selling of Bitcoins. How long will transaction confirmations take then? If traders are forced to pay large transaction fees just to get a reasonable confirmation period, Bitcoin will be less attractive to use. |
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Maybe the invisible hand of the market place will make the value of BTC reflect cost of production versus reward.
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Difficulty will only drop if a lot of farms turn off their gear. It's likely that most folks will be mining at a loss for the first period after the halving. What sucks is, since mining only alters the total supply by a fraction at a time, the supply/demand curve won't be moved very much at all by the halving so it won't have much effect on the exchange rate.
Using the same argument, why don't you think that most of the miners are alreayd giving up(looking at the low prices ) ? Shouldn't we also expect a drop in difficulty right now ? This doesn't seem to indicate that. |
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There's more complaints about the stock S5 fan noise than the C1 fan noise. Not the same fan?
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Very rough math after looking at the Wiki ( https://en.bitcoin.it/wiki/Controlled_supply) working with same expected rate of change (almost certainly wrong given that difficulty slope has changed so much this year) the fourth reward era of 25btc/block might occur on May 31 this year. Then the first reward era of 12.5btc/block might be Jan. 2, 2016. Again, the slope has gotten closer to level while it had been so very steep in earlier years so that 1/2/16 is probably much later, perhaps the spring? The wiki page showing start of the last reward era of 25btc per will tell the tale and give a look at what we can expect regarding when that next era starts. |
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