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I had this happen with mmpool.org back in November 2015.
I went for 11 coins on 1 block. Not going to drop,big,coin at this but I,am running a little at the block right now.
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based on the op he is not usa based.
so even if he gets used forklift batteries he needs 2 big ups units.
I know of a ups sell in the usa that will sell refurbs cheap.
but that is a usa seller won't help him at all.
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Thank you for the addy, since 2016-05-30 to 2016-06-08 (not many 3+ BTC deposits since 2016-06-06) I counted about 392 possible S9 batch 1 ; I counted 1 S9 = about 4 BTC when 3+ BTC deposit (so 15 BTC deposit = 4x, 6.5 BTC = 2x and so on). I did not included one massive 4811 BTC deposit though, but I added 3 times about 80 BTC deposit even though the max should be 20 BTC with 5 units. Since 2016-06-09 to now I counted additional 228 possible S9 (batch 2?) So the 600 S9s does represents about half percent of additional network hashrate - nothing to worry about at all - it seems pretty insignificant number of S9 sold so far. Thanks for doing this math. If it's accurate, they really haven't sold many units. There are probably a lot of folks on the sidelines waiting for the BTC cost of the S9s to go down. I'm one of them. I really want to buy, but can't justify spending more BTC on a miner than it will likely make in a year. Bitmain must know that their pricing choices have limited sales. So it's either intentional and part of their master plan, or out of their control (maybe they can't produce enough chips). My guess is that they're happy to mine with their own S9s up to the halving, while at the same time enjoying the premium that they're getting from early adopters of a limited release. If BW ever does release publicly, Bitmain can respond then with lower priced batches, killing the competition (again). Until then they can cruse into the halving with high S9 unit prices. In the meantime, BTC prices have shot up resulting in a new high point in mining profitability. If this price holds (or goes up) my original estimate of around 140 PH/s going offline after the halving is probably too high. Older machines will remain profitable, so why turn them off. So people who are depending on a significant difficulty reduction after the halving for their ROI calculations are probably in for a surprise. But with higher BTC prices maybe they won't care. As an aside, why does Bitmain reuse receive addresses? Seems lazy on their part and possibly dangerous because it leaks sales information. Not sure and they now have more then 25 million usd in that address! https://bitcoinwisdom.com/bitcoin/difficultyBitcoin Difficulty: 196,061,423,940 Estimated Next Difficulty: 201,802,916,705 (+2.93%) Adjust time: After 1272 Blocks, About 8.4 days>>> we start in 156 blocks so some time monday nite eastern standard time.Hashrate(?): 1,446,261,937 GH/s Block Generation Time(?): 1 block: 9.5 minutes 3 blocks: 28.6 minutes 6 blocks: 57.1 minutes Updated: 21:35 (4.7 minutes ago) |
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I don't actually own a Kill-A-Watt and none of the stores I looked at in town apparently carry it, so I just threw together a metered socket with 0.1A resolution. The miner is currently powered off a Dell Z750P PSU. At hot voltage (650mV) I market 120V 2.1A, and when it switched to cold voltage (620) I mark a solid 120V 1.9A for 228W - that's the controller, both fans and a single board clocked at 1012GH for a device-level efficiency of 0.225J/GH
With both boards and the stock PSU, the current is bouncing between 3.4 and 3.5 amps. If we call it 3.45A, that's 414W for 2.03TH at 0.204J/GH - which definitely makes me happy.
I'll do more measures tonight (it's friggin' hot at the shop so I'll run it at home where I can also get a good "how annoying is this" sound gauge) and put up some more numbers on different setpoints.
EDIT - except that I moved some hex files over to a thumbdrive and then left it plugged into the workbench machine and didn't realize until I was already at home. So I won't be testing other voltage setpoints tonight. Whoops.
Also I have interest to the tune of 3 machines so far for a group buy.
while doing this, did you still had to power all 7 PCIe connectors or 4+1=5 was enough? As far as wattage goes, it should be OK with 5. Some people might be interested in selling the PSU on the aftermarket and powering two or even three with one EVGA 1300. Using splitters one can up the number of connectors on 1300w EVGA to at least 12 easily. I am looking to run 1. I am looking to use it with this psu. https://www.amazon.com/gp/product/B01CE7NUIU/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1I think it would do 395 watts. I also may try to trick the fans the fans pull a lot of watts this fan below does less watts. https://www.amazon.com/Focused-NF-F12-iPPC-3000-PWM/dp/B00KFCRATC/ref=sr_1_1?s=pc&ie=UTF8&qid=1465781203&sr=1-1&keywords=noctua+3000goal would be to get under 390 watts |
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Difficulty will decrease after the halving. If diff increases it's due to newer hardware and btc price rising instead.
Did difficulty decrease after the last halving in 2012? A lot. 10-11% http://www.coindesk.com/data/bitcoin-mining-difficulty-time/drag sliders from the left and from the right to 'focus' around November 2012-Jan 2013 It did slide around Christmas while block change occured in November, almost exactly one month earlier. In another 6 weeks it was back. And 2012 we were a mostly gpu network coins were around 8 to 12 usd. So a small drop 10 to 15 % in 2012 is not surprising. This 1/2 ing I see 18 to 30 percent drop. But it will recover in August and September . |
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I would guess any regulated-string S7 variant would be improvable.
I would also guess the S9 would be improvable. 63 chips is seriously dense though, so they might already be running them close to bottom end. I have an S9 being delivered for hosting this week that I could spend an hour with if the owner allowed it, but I don't like experimenting with other folks' hardware.
I'll try and work out some efficiency curves for the S7LN this afternoon, might bring it home and run it here at the house to get an idea of noise. Should probably bring a stock S3 as well for comparisons, since me saying "it's not that loud" doesn't mean anything to almost literally everyone else (I have a very high tolerance for fan noise).
So, something like a hacked S7LN group buy might be in order?
Sending pm. |
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This is a thread about reliability and you didn't expect arguments coming?  This topic is about the trustworthiness of BITMAIN. Should have made it "self moderated" then  Live & learn  Op you can lock thread and then do a self modded thread. The problem with your question is most if not all ASIC builders have done wrong to some of us. So people will make pretty nasty remarks about them. |
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This is a thread about reliability and you didn't expect arguments coming? This topic is about the trustworthiness of BITMAIN. If you buy an s-9 or an s7 or and s-7ln Pay with btc fast with proper fee to the blockchain Answer the email they send fast. You have a 100% chance of getting the gear. Based on my 50 purchases to New Jersey You have a 2 in 50 chance for bad or slow gear. Based on my 50 purchases. If you get bad gear they are slow to fix it. Avalon purchases I got 45 Avalon 6s or Avalon 4s Sent to me in NJ 0 were broken I broke 1 they were fast to sell me the repair part at a good price. Note I paid for this since I over clocked and broke the gear. Long time ago Avalon did a lot of people wrong. I did not purchase at that time so I do not hold it against them. But they have no new gear right now and they just cut a deal with a big Chinese power company. So I do not know if they will sell gear to us any more. I have no problem buying from them and if they want me to run a group buy like I did in jan 2016 I will do so. |
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Yippee-hoo! Two of my three S7s are online...one more to go...I love it when a plan comes together...  Coins are pushing 675. Nice timing. |
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Well the one blade's been running solid at 620mV (9.3V, down from 10.0V stock) and 450MHz (1TH) for about 15 hours now. This afternoon I'll do some more testing of the absolute bottom end efficiency and overall power use, generate some charts and plots for y'all. I'll go ahead and work up a stock S7 as well.
Just wondering, would anyone be interested in a group buy of S7 or S7LN pre-flashed to the desired improved efficiency setpoint for a moderate markup (maybe $20-30), tested and reshipped within the US within one or two days of arrival at my shop?
maybe an an s-7ln for me works, but do you think the s-9 can do this? and drop to 9.3v if so it may end up being an amazing value. I have 4 s-9's two coming on tues-weds two in 12 days or so. I think I will run 3 s-9's in the array and one with my buddy in his office. Then run your s-7ln in house for fun along with the eth coin gear. Maybe some research on s-9's will allow for them to go down to .090 or .085 per gh |
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Looking at the monthly charts. It' appears we could be nearing the 5 th leg. Watch close for sure:)
Best Regards
D57heinz
we were building an ascending triangle since last October (8 mo or so). This upmove is the breakout out of that triangle, so i don't know about wave count. We very well might correct here, who knows. Back in late april, i bought a few coins for an upcoming S9 purchase. S9 turned out to be overpriced in btc by 2X of what i was expecting (although I was projecting a ~10th miner, so less than 2X considering that it was 13-14Th), so i kept the coins for a nice gains so far. Maybe in two mo i will be able to buy two S9 for these btc, as i was expecting in the first place. EDIT: That said, those who will start mining on S9 from this Tue-Wed will enjoy the most $$ profitability (mining reward vs cost) we have seen in the last 3 years. Too bad it will last only a bit less than four weeks at this level. At current btc value I calculate $693 in revenue until halving per ea machine with $80-95 in electrical costs (at 8-10c/kwh). I have 2 on tues maybe weds |
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Live in a basement and I don't pay for electricity where I'm renting; water and Electricity are free.
The air down in a basement is probably cool enough to just use box fans. They're cheap and you can pick them up at walmart or basically any box store. They'll use less electricity too I'm pretty sure so you can fit more miners on your circuit before it...goes boom Ah okay XD Also just a question put in cool and non humid conditions (I have a dehumidifier as well - EXPENSIVE) how long could a miner last if not overclocked? Hm...a miner can last easily a year I'd say. Obviously it's not for certain. 2 different people could buy the same electronic from the same store and keep it in the same place and one could last a year and the other 8 months or something. Errors happen. if he downclocks just a bit the gear should last more then a year. my s-7's are online since sept 2015 downclocked. ----------9 months the solar array has an s-5 and 2 sp20 s since dec 2014 downclocked.---------- 18 months and I know of quite a few s-3's running since july of 2014 downclocked.---------23 months |
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Some fun with bitmaintech master btc addy https://blockchain.info/address/1KwA4fS4uVuCNjCtMivE7m5ATbv93UZg8Vfirst orders
https://blockchain.info/tx/b8af612b665c50e22d7fac09b69d7a19a714673f0451ab0e2e84e3bd2fd401e4 9.906
https://blockchain.info/tx/800eba8a97d69b360723d36a534626db1e6bb3c7b82db7b39e780a5fb5e1cd54 4.007
https://blockchain.info/tx/6815fe3a880fff73725ac6fbeae17447931b79708c573f165a4a39d5ac6c5151 4.014
https://blockchain.info/tx/007ee4c061744ae9bf9f098fef3d155b23a5d9c70c420317698514a1cad64e68 7.901
https://blockchain.info/tx/00768ea6e10b00b36128cfc371a6c7015f6cc9a19046e4dea50fb55a92947748 3.996
https://blockchain.info/tx/df36110d761329593c6a3eea0a2d491c3e4d346fa8a7c37be3caa3cdab5ba986 18.373
https://blockchain.info/tx/f9b12a49c258461983a50116a0ebca41a0f268cded28c1f45ca6e64861055189 12.799
https://blockchain.info/tx/789d495b8638127dda5cc9223b40a87490a88edcf6cf92592c3793e97aa5fd95 19.808
https://blockchain.info/tx/c6789a6dcd0f8f272b4689c6177f4ee80dff1e58cae5deca0ce9e3b4ccd5a7fe 19.769
https://blockchain.info/tx/1234c695cc1a42f927ba7a2b3eae8f9ac08d487997a0d723390d0ea585f0b8e8 3.996
https://blockchain.info/tx/feb24794abb5272172615b7d1935b8cb446e473e8c38a40d46f9da9c186bfb95 4.012
above was about 160 coins 37 to 40 pieces depends on how many psus purchased
https://blockchain.info/tx/974ec95695346a04174dc60565ebe52ccb28837399c43269d89b51a96921cdf9 19.741
https://blockchain.info/tx/a0a791ae1daacbaeafa3e01968583052810b693faf33191471f614c04540d017 3.995
https://blockchain.info/tx/4f171d5d371cd517b4d8760989a45d3a93f6ef061655a071c09087ed6bf4e772 19.8
https://blockchain.info/tx/d13bded6bb0647d6aab21f44ec9b624da8b1f24be17d46dcf9c2cdf57c3cb4fb 8.63
https://blockchain.info/tx/b411964fbb16d1fd09aa81ddd4093be2b52947f154486e32713f94380cd7d766 7.985
https://blockchain.info/tx/d7cd8aba35b4c0abb6906a75aec6fab391dc399d0d6eedf29b039e3772b70a62 20.616
https://blockchain.info/tx/abf15c65065ce587cc0f96f5efc06b050622d7a687507a75f68af759a20f0479 4.018
https://blockchain.info/tx/7464ee7043c8c0ac3421603b5835d2a78d5122333d1b444bce0ef61c2c80086c 7.917
https://blockchain.info/tx/ed07efe73561e9848e5110ae291d66ca533c9cf2759b6328e60677baccc94bb2 4.5
https://blockchain.info/tx/e59945d6a1bcfdd5b9ae83908fe6f9ac526471eb2fa19c9f1a1899beea998020 7.225
https://blockchain.info/tx/39cad480fe50e8c13cffaab0e4f780a2f59c50493283cabe78bd6b595f8f3417 7.877
I will work on this later today but section 2 is 112 coins about 26 to 28 units or 63 to 68 units
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Anyone knows how many S9 batch 1 were sold? These S9s should be received before this difficulty ends thus impacting this difficulty. But 1000 S9s is just about 1%, and I doubt much more were sold thus not big impact at all?
I am lazy but here is the btc addy. Some fun with bitmaintech master btc addy https://blockchain.info/address/1KwA4fS4uVuCNjCtMivE7m5ATbv93UZg8Vfirst orders
https://blockchain.info/tx/b8af612b665c50e22d7fac09b69d7a19a714673f0451ab0e2e84e3bd2fd401e4 9.906
https://blockchain.info/tx/800eba8a97d69b360723d36a534626db1e6bb3c7b82db7b39e780a5fb5e1cd54 4.007
https://blockchain.info/tx/6815fe3a880fff73725ac6fbeae17447931b79708c573f165a4a39d5ac6c5151 4.014
https://blockchain.info/tx/007ee4c061744ae9bf9f098fef3d155b23a5d9c70c420317698514a1cad64e68 7.901
https://blockchain.info/tx/00768ea6e10b00b36128cfc371a6c7015f6cc9a19046e4dea50fb55a92947748 3.996
https://blockchain.info/tx/df36110d761329593c6a3eea0a2d491c3e4d346fa8a7c37be3caa3cdab5ba986 18.373
https://blockchain.info/tx/f9b12a49c258461983a50116a0ebca41a0f268cded28c1f45ca6e64861055189 12.799
https://blockchain.info/tx/789d495b8638127dda5cc9223b40a87490a88edcf6cf92592c3793e97aa5fd95 19.808
https://blockchain.info/tx/c6789a6dcd0f8f272b4689c6177f4ee80dff1e58cae5deca0ce9e3b4ccd5a7fe 19.769
https://blockchain.info/tx/1234c695cc1a42f927ba7a2b3eae8f9ac08d487997a0d723390d0ea585f0b8e8 3.996
https://blockchain.info/tx/feb24794abb5272172615b7d1935b8cb446e473e8c38a40d46f9da9c186bfb95 4.012
above was about 160 coins 37 to 40 pieces depends on how many psus purchased
https://blockchain.info/tx/974ec95695346a04174dc60565ebe52ccb28837399c43269d89b51a96921cdf9 19.741
https://blockchain.info/tx/a0a791ae1daacbaeafa3e01968583052810b693faf33191471f614c04540d017 3.995
https://blockchain.info/tx/4f171d5d371cd517b4d8760989a45d3a93f6ef061655a071c09087ed6bf4e772 19.8
https://blockchain.info/tx/d13bded6bb0647d6aab21f44ec9b624da8b1f24be17d46dcf9c2cdf57c3cb4fb 8.63
https://blockchain.info/tx/b411964fbb16d1fd09aa81ddd4093be2b52947f154486e32713f94380cd7d766 7.985
https://blockchain.info/tx/d7cd8aba35b4c0abb6906a75aec6fab391dc399d0d6eedf29b039e3772b70a62 20.616
https://blockchain.info/tx/abf15c65065ce587cc0f96f5efc06b050622d7a687507a75f68af759a20f0479 4.018
https://blockchain.info/tx/7464ee7043c8c0ac3421603b5835d2a78d5122333d1b444bce0ef61c2c80086c 7.917
https://blockchain.info/tx/ed07efe73561e9848e5110ae291d66ca533c9cf2759b6328e60677baccc94bb2 4.5
https://blockchain.info/tx/e59945d6a1bcfdd5b9ae83908fe6f9ac526471eb2fa19c9f1a1899beea998020 7.225
https://blockchain.info/tx/39cad480fe50e8c13cffaab0e4f780a2f59c50493283cabe78bd6b595f8f3417 7.877
I will work on this later today but section 2 is 112 coins about 26 to 28 units or 63 to 68 units
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Block
Love them back to back blocks - kano pool speciality ... and we can actually account both to the failover that has now been ramping up and running for 8 hours, keeping us over 60 and 70PH most of that time  Now if the top two also got a block each ...  Edit: oh and the 7 payouts due where confirmed in the first one of course. 3 failover blocks failover? you reckon the big whales are here not for long?  I know who the 4 are. Just not sure why they've failed over for almost 12 hours ... not complaining at all, and they are doing fine, it's just that I know they are (normally) failovers. Edit: and they finally failed back from whence they came. I dont get it.... why they choose to failover to a PPLNS pool, would they be better off mining a PPS pool during failover mode? the 5n helps a lot. |
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I am talking about the blue end pictured below. If you wiggle it a little it moves, is there anyway to make the connection more solid to the PSU? I noticed that one of the modular cables was at a slight angle and the cable was a little hotter than the other one.  Gently and very gently bend the pins in the back of the PSU off centre by a very small amount. Use a small jewellers screw driver. Plug will then push in and make a better contact. If you are feeling brave, use a molex extractor and drop the female terminal from the receptacle on the free lead. Inspection under a magnifying glass will show the seam where the pins are folded. A gentle squeeze with some plyers and some practice will close the terminal back up and improve the connection. All crimps of this type wear over time. The industry could not have picked a worse type of power connector to use for mining machines. When they come loose they get hot then burn out. They are changeable but I find it best to use a rework station on the of PCB end and use the hot air to replace the sockets in one go.
Good luck!Replacement of them is best but many people do not have the gear. Or like me some have older eyes that do not see close well. He could buy a cable from the psu company. Some companies do sell replacement cables I don't think its the cable because I tried different cables from different PSUs, it seems this issue is from the male end on the PSU. Then gently bend the pin in the PSU socket half a mm. It will have an instant effect. My SP20's had the same problem and this cured them all. Bend it which way? Opposite the way its leaning ? yes but depending on how the pin got off set you could snap the pin no melting in this psu see all my pins are lined up are yours all lined up? is the one set of pins in the psu all just off by a little compared to the other sets of pins? or is just one or two pins off on the one psu socket?  |
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So Yesterday was +8.33% with 156 Blocks and the Hash rate is gradually pushing up with the Period to date now at +6.4%. However the big news, as alh has said, is on the Price... Big rise Yesterday and continuing on up Today. This may be the push that sees us convincingly through $600. Here's hoping... Rich Bitcoin Difficulty: 196,061,423,940 Estimated Next Difficulty: 203,137,665,988 (+3.61%) Adjust time: After 1329 Blocks, About 8.7 days Hashrate(?): 1,472,725,231 GH/s Block Generation Time(?): 1 block: 9.4 minutes 3 blocks: 28.2 minutes 6 blocks: 56.4 minutes Updated: 11:55 (5.1 minutes ago) Coinbase is 648 usd! I sold 0.80 btc at 642 just to know I was able to sell at a price this high. The diff is hanging in there pretty high we look to do over 200 easy this jump  almost always over 0%  |
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You can set three different pools. The miner will always run on the first pool and the other two would be backups I case the first pool dropped out. You should see a setting on the configuration page saying "failover" you can change that so it balances the work across al three pools or set up a quota so it does the same amount of work on each etc.
You will get more errors if you share the miners work across all three and obviously you will see less of a payout from each pool as the hashrate will be shared. So 6Th/3 would be approx 2th per pool.
Thanks for explanation here is a photo two s-7's on the same controller running with 3 pools  |
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Block
Love them back to back blocks - kano pool speciality ... and we can actually account both to the failover that has now been ramping up and running for 8 hours, keeping us over 60 and 70PH most of that time Now if the top two also got a block each ... Edit: oh and the 7 payouts due where confirmed in the first one of course. 3 failover blocks failover? you reckon the big whales are here not for long? I know who the 4 are. Just not sure why they've failed over for almost 12 hours ... not complaining at all, and they are doing fine, it's just that I know they are (normally) failovers. Edit: and they finally failed back from whence they came. That's alright for me. I am expecting the halving in 28 days not today yeah I get 25 days at worst with 30 days at best for the ½ ing |
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