|
The difficulty ramp up compared to the hashrate on these miners makes these look like the first miners I have purchased since BFL that will fail to make any profit. At this rate I am questioning their ability to even pay back what I paid for them. I am speaking in terms of BTC paid to purchase them vs BTC eventually earned before they become completely useless.
|
|
|
|
How do I run one of these bad boys in Canada with only 120 Volts?
I run mine off 120V, just use regular ATX PSUs that are single rail. However you do need a dedicated 20A circuit to be safe! I use a 1000W PSU (2 boards) + 650W PSU (1 board). Or get an EVGA 1600. I used a 1300W for a while but it was just too close to the margin for comfort IMNSHO! The huge thing is not to mix PSU's on the same hashing board. So you need to power entire hashing board via 1 PSU. So it has been kinda common for 120 to use two. One that powers two boards, one does other and controller. It can work. I like all in one but that is a lot harder to do in 120v area as evga 1600's are high priced. Compare to 220/240 server PSU's its a huge jump in price. But I still like one PSU for all if at all possible. EVGA G2 1300W PSU............problem solved. Got 3 powering 3 S7 for the past 2 months, no issues. Just buy 2 extra dual PCI-E cables for $40 extra for OEM and cheaper for non OEM cables. I have an extra EVGA G2 1300W PSU at a good price if anyone needs 1. Will include the 2 extra PCI-E cables so you can have 10 connections to the S7 at no additional charge. Just PM me. You can use the single OEM 6pin and buy good Y Splitter on the forum for 3.5$ per. Definitively works for S7's, but some S7 really cap out the PSU, so it might make some people nervous to see 1460W at the wall on their 1300W psu. No problem for the G2's anyways. On a related note, anyone know where to get the short jumper cables for the EVGA 1300 G2? they are the female pins, unlike Corsair 750 that you can jump with a paperclip in the master cable. Are you asking how to jump them? You jump them the same was as every other PSU, pin 4 with any ground. Tho all the EVGA's i've bought in a while comes with the neat adapter that jump 3 and 4. I know how to jump it, but have to use the full 24 pin ATX cable and plug in the jumper module. I was looking at doing this without using the fat 24 pin cable and directly on the PSU. I have one setup like this, but need more of these little jumper cables. See picture.   Oh geez I'm not sure I would like those things. You get the wrong holes and it could be lights out for a very expensive PSU. I did actually wonder though why EVGA didn't make a jumper thingy that plugged straight into the PSU like that instead of making one that required the cables to be plugged into the PSU only to have a cap put on the end of the cables to jumper it. |
|
|
|
|
I believe traditionally this means we should be seeing a block any minute now.
|
|
|
|
|
You must have missed the posts about this already. Basically it is a known issue that if the internet goes down the fans do not spin fast enough to cool the boards and they will overheat and fail. This is only an issue on earlier batches (not sure which batch it was finally fixed on) and only if you have the fans set to auto and never updated the firmware. There is firmware that fixes this but it has been pretty well established that setting fans to manual above 60% or so will keep this from happening also.
|
|
|
|
|
Less than an hour until the contest starts. Good luck everyone but I would really like to see someone with under 50Th/s win it. The smaller the better actually.
|
|
|
|
|
What's up with the website? On live stats, difficulty keeps going to 1 and CDF to 99.99%. It did this a little while ago and then corrected but now it is doing it again.
|
|
|
|
Did we lose shares? I thought I had seen the shares hit over 100% before it updated, but the block was only 89% and we are at 1% now. Shouldn't the total between those two be much higher?
I'm sure Kano will let us know at some point and confirm this (I hope) but as long as you was mining at the pool (should of been no reason why not as mining was not affected) then your shares will still be recorded and you will get paid for all your shares. Look at the shifts page and you should see your stats there. I understand that. I only asked because there was a discrepancy between numbers. If a glitch showed a higher percentage than what it should have then it makes sense. My point was that the shares had climbed to +100% after that confirmed block. Which to me meant that after it updated our current shares would be +10% since the block was only 89%. But ck says all is good and I trust them so no biggie. I think you may be right about that. I think the diff% may be off for this block because of the glitch. |
|
|
|
Guys, I need your help, I have a problem with my Antminer S7 I have a group of Antminers S7 in a remote area. and I check on them every day with TeamViewer. The problem is, some miners just turn off by themselves. and I cannot connect with them at all. I cannot connect using their ip on the web or using the cryptoGlance app. Here is a pic of problem with 102 miner:  The temp seems fine. I'm not sure what is their problem. It is frustrating, The only thing that fix them is to go this remote room and reboot them manually. but they sometimes turn off after couple hours, sometimes they don't. The problem is not related to one miner in particular, I mean sometimes 101 turns off, I reboot it manually, then 102 turns off then 104 then, and so on. I'm using the bitmain power supply APW3-12-1600-B2. The electricity here is 3-phase 230-380v. and of course I'm using 230v for my miners. I'm dealing with this issue on a daily basis nowadays. Any idea? Has anyone had this issue here? Are they DHCP or static? You can have accessibility issues like that if you have IP address conflicts. |
|
|
|
Have my S7 running  Due to the amount of noise it makes I underclocked it's frequency to 400. Getting 3TH at that rate. Whenever I find a better place to keep it running I'll up the frequency a bit. There's no way that I'll be sleeping with it in my room. Why not run it in the garage at full blast and get free heat while you're at it? You're losing money at 3TH. If you're living in a cold weather area, lower the fan to 30% and see if the temp is within ok range. IT would be more livable. You can also buy custom 3D printed DUCT where you duct the Intake to take in cold intake air from outside and push out the hot air to the outside as well. If you do that, you can lower your fan speed which is the only thing that is making those noise. http://www.ebay.com/itm/4-pack-bitcoin-antminer-s1-s2-s3-s4-s5-s7-zeus-lightning-fan-air-duct-4-pack-/331763938079?hash=item4d3eabf31f:g:edgAAOSwpRRWn~HpI would be careful with that seller on ebay, has only sold one item ever. Only has sold one item in last 12 months and it was stated in feedback that communication was good but shipping was slow after payment. I used this: http://www.amazon.com/gp/product/B000SL22FW?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00And built my own enclosure for the miner out of cardboard. Works well enough.   That's very creative. 100 extra points for being resourceful and creativity. I agree it is a intersting way to get the exhust out. Are you able to take picture of where they all go to? I'm curious as far a what you did with other end of duct. There is a drop ceiling so they just vent above that to the attic. The building is probably 8 or 10 thousand square feet total so the attic is rather large. |
|
|
|
Have my S7 running Due to the amount of noise it makes I underclocked it's frequency to 400. Getting 3TH at that rate. Whenever I find a better place to keep it running I'll up the frequency a bit. There's no way that I'll be sleeping with it in my room. Why not run it in the garage at full blast and get free heat while you're at it? You're losing money at 3TH. If you're living in a cold weather area, lower the fan to 30% and see if the temp is within ok range. IT would be more livable. You can also buy custom 3D printed DUCT where you duct the Intake to take in cold intake air from outside and push out the hot air to the outside as well. If you do that, you can lower your fan speed which is the only thing that is making those noise. http://www.ebay.com/itm/4-pack-bitcoin-antminer-s1-s2-s3-s4-s5-s7-zeus-lightning-fan-air-duct-4-pack-/331763938079?hash=item4d3eabf31f:g:edgAAOSwpRRWn~HpI would be careful with that seller on ebay, has only sold one item ever. Only has sold one item in last 12 months and it was stated in feedback that communication was good but shipping was slow after payment. I used this: http://www.amazon.com/gp/product/B000SL22FW?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00And built my own enclosure for the miner out of cardboard. Works well enough. |
|
|
|
Trying running it at 55-60c to see if you see a big difference. That could be it. But you also have a pretty high HW from what you should. What is the PSU? I've seen this kind of performance drop when using a subpar PSU. Can be one the other or a combination. AX1200 powering board 1+2 RM750 powering board 3 and controller On dedicated 240v outlet Should be fine, try raising the temps, thats easy to do. I'd just be surprised if you'd lose 100GH/s just because of the temps, but i'm interested to see what the hashrate will be afterwards. Well lowered fan speed to 20% and now hashing at 4.7ish with .0006 hw errors. And 55-60c I'll let it run for a hr and take another screenshot and post it. Appreciate the help Just FYI, I have 3, all from different batches and one thing that is consistent with them all is that when they power up, they throw a lot of HW errors. I always let them run a few minutes to heat up the chips and then do a save and apply on the config without changing anything just to restart cgminer. That is the best way to get a clear picture of the HW error rate in a reasonable time frame. |
|
|
|
UPS wants to charge me a fee for import duties. This may well be the last miner I buy from bitmain since they obviously can't get their shit together with the paperwork.
Was it over $2500 total purchase or below. Fedex seems like the bether route. Just one miner. It must have been around $1130ish at time of purchase. So looks like the duty comes out to around 3.15%. I have never had to pay a duty on miners before. I saw that conversation about HST codes but I had already made the order by the time people were talking about it in the thread and I was unable to go back and change anything to add it to my order. Call the number on the invoice and tell them what it is, UPS will refund, at least they refunded mine. Well after calling UPS many times, waiting for a call back and not getting it, then calling again, then calling different departments, I was told the charge was being removed. The miner hasn't arrived yet, supposed to arrive today so we'll see if the driver gets the info that there isn't supposed to be a charge. The lady I talked to asked me what a bitcoin miner is and then she put me on hold and when she came back she said she "added an entry in the system for bitcoin miner that has no duty fees". Now I don't know if that is specific to my delivery or if that means a UPS-wide thing so that this doesn't happen with packages labelled "bitcoin miner". It sure seems like when you call them, you get told entirely different things depending on who you talk to. I should also apologize to bitmain for my original post too. This does not appear to be their problem after all, it's a UPS problem so apologies to bitmain on that count. Most likely was specific to your delivery. I doubt they did a blanket rule for everyone. If you are in US and get a decent sized charge call the carrier, as you really should not have that much extra cost over shipping if any. It is normally a mixup and can be fixed by calling when it does happen. Some other countries are stuck with vat/import taxes so this calling will not work for everyone. So of course the driver arrived and required me to pay in order to leave the package. So now I have to see if I can get a refund. I guess it's fedex from now on. EDIT: Also my batch 9 IO board only has connectors for the 3 blades. UPS, DHL and FedEx all have the right to charge customs brokerage fees and processing fees while importing items, while the miner may be duty/tax free they are still permitted to charge these fees as services rendered. They usually don't charge these for smaller orders, and sometimes it's just a wrong HTS code. Hopefully you got the name on who you talked to. When possible try to get name and extension. Did you have the info of person you talked to show driver? Or did driver not care and said to fight it later? I got a whole list of names and numbers now. The last I heard was from brokerage accounting and they said that yes the fee was zeroed but the person didn't do the followup they were supposed to do in order for the delivery center to get that information which is the only place that matters for the driver. If the delivery center (which is local) says get the money then he has to. But the brokerage accounting person said that an invoice will be generated and it will show $0 and they will use my check to pay it which will create an overage which will result in an automatic refund. So I said great, at what point do I call someone when I don't receive a check and who do I call? So I have a number for that eventuality. |
|
|
|
UPS wants to charge me a fee for import duties. This may well be the last miner I buy from bitmain since they obviously can't get their shit together with the paperwork.
Was it over $2500 total purchase or below. Fedex seems like the bether route. Just one miner. It must have been around $1130ish at time of purchase. So looks like the duty comes out to around 3.15%. I have never had to pay a duty on miners before. I saw that conversation about HST codes but I had already made the order by the time people were talking about it in the thread and I was unable to go back and change anything to add it to my order. Call the number on the invoice and tell them what it is, UPS will refund, at least they refunded mine. Well after calling UPS many times, waiting for a call back and not getting it, then calling again, then calling different departments, I was told the charge was being removed. The miner hasn't arrived yet, supposed to arrive today so we'll see if the driver gets the info that there isn't supposed to be a charge. The lady I talked to asked me what a bitcoin miner is and then she put me on hold and when she came back she said she "added an entry in the system for bitcoin miner that has no duty fees". Now I don't know if that is specific to my delivery or if that means a UPS-wide thing so that this doesn't happen with packages labelled "bitcoin miner". It sure seems like when you call them, you get told entirely different things depending on who you talk to. I should also apologize to bitmain for my original post too. This does not appear to be their problem after all, it's a UPS problem so apologies to bitmain on that count. Most likely was specific to your delivery. I doubt they did a blanket rule for everyone. If you are in US and get a decent sized charge call the carrier, as you really should not have that much extra cost over shipping if any. It is normally a mixup and can be fixed by calling when it does happen. Some other countries are stuck with vat/import taxes so this calling will not work for everyone. So of course the driver arrived and required me to pay in order to leave the package. So now I have to see if I can get a refund. I guess it's fedex from now on. EDIT: Also my batch 9 IO board only has connectors for the 3 blades. |
|
|
|
UPS wants to charge me a fee for import duties. This may well be the last miner I buy from bitmain since they obviously can't get their shit together with the paperwork.
Was it over $2500 total purchase or below. Fedex seems like the bether route. Just one miner. It must have been around $1130ish at time of purchase. So looks like the duty comes out to around 3.15%. I have never had to pay a duty on miners before. I saw that conversation about HST codes but I had already made the order by the time people were talking about it in the thread and I was unable to go back and change anything to add it to my order. Call the number on the invoice and tell them what it is, UPS will refund, at least they refunded mine. Well after calling UPS many times, waiting for a call back and not getting it, then calling again, then calling different departments, I was told the charge was being removed. The miner hasn't arrived yet, supposed to arrive today so we'll see if the driver gets the info that there isn't supposed to be a charge. The lady I talked to asked me what a bitcoin miner is and then she put me on hold and when she came back she said she "added an entry in the system for bitcoin miner that has no duty fees". Now I don't know if that is specific to my delivery or if that means a UPS-wide thing so that this doesn't happen with packages labelled "bitcoin miner". It sure seems like when you call them, you get told entirely different things depending on who you talk to. I should also apologize to bitmain for my original post too. This does not appear to be their problem after all, it's a UPS problem so apologies to bitmain on that count. |
|
|
|
After setting up proper monitoring (screw you, Minera!) we found out our HW error rates are way low, in the order of 0.0018%. So thrilled seeing such low numbers.
As for the temps, our cooling setup isn't entirely completed yet. What is the temps you usually "accept" your blades to run at? I was seeing 63c on some miners, is that within reasonnable range? It's safe up to what temps?
Thanks for the help!
Opinions vary on this. But it has been observed with previous models: S5, S3, etc.. that lowering temperatures after a point also lowers the hashrate. So getting the absolute lowest temperature you can on those miners is not the way to optimize hashrate. I believe it is probably true of the S7 as well although I haven't run one in conditions where the temps get into the 40's as reported by the GUI. I am running mine in an environment where they are in the 60's most of the time. They do occasionally get as high as the low 70's (73 being the highest I have seen) on one or two boards for a few hours during certain times of the day depending on the outside temps. If they spent more time in the 70's I would probably make changes to bring down the temps. Previous generation miners were pretty much designed to run without AC but with some mechanism in place to get rid of the hot air. So in other words you could run them with room temp air going in without an issue. |
|
|
|
Still priced at 3 cents at the moment. So we could still say that it is not a 100% loss. Plus the flour oh I mean floor is at 20 sats right? What a tremendous buying opportunity this is! |
|
|
|
We are running about 100 of these units and the GLOBAL hw error state is of about 75%. We have a huge number of hardware errors, on batch 6/7 miners at stock clock. Not sure where to go from that, these numbers can't be healthy. Example of 1 miner:  And another one:  Don't know what to do with this so far, other than downclocking but such high numbers aren't normal. Those aren't terrible. I think you meant .0075% not 75%. I usually like to keep mine under .01%. When these things first start from a power-on they tend to throw a lot of errors. If you go into the miner config and do a "save and apply" without changing anything just to get cgminer to restart it tends to start with far fewer errors. Also I personally think you would get better results overall if you raised the temperature on those. |
|
|
|
|
Lots of tiny tx's would mean more kilobytes in the transactions which would mean you needed to attach higher fees to get a miner to pick it up. Nothing at all would prevent you from doing it though. Also what he actually says there, .1 BTC deposits are not even small, lots of .0001 deposits (or smaller) would cause the issue where you needed more fees. What he says is only a total of 50 deposits at .1 each which is not a big deal at all.
|
|
|
|
Hacker...
Jop, N.P.M aka mullick aka cryptsy-hacker. One very obvious question for teeny tiny vern would be, why didn't Mullick get shitcanned for the hack? He was the wallet guy and according to his own words the network and server security guy. I am inclined to believe the narrative that there never was a hack. |
|
|
|
|
So if the consensus is that this place is a scam, how are they amassing an ever increasing percentage of the network hashrate?
|
|
|
|
|
Show Posts
