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Ok, thanks. A quick observation, if I may; the luck column in the dashboard should be left renamed to difficulty, no? A 30 second block shows as something like 4% luck.
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Have anybody experience of zwilla.de firmwares for S7 they have very big promises?
Never heard of them. What are they claiming their firmware does? |
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All that needed to be said in this thread was said in the first reply by Dogie. Can you guys stop bumping these scam threads up to the top of the forums and giving them attention!? Do you really think what you have to say on this dead horse subject really needs to be heard???  Edit: ▼▼▼ Case in point ▼▼▼ |
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The issue is not with my computer. I started noticing this with the release of 0.10 or so. 0.11.2 still has the same issue for me. Being 24 hours behind can take half an hour to sync! Completely unacceptable. The wallet is installed on a Samsung SSD in a 5960X rig with a gigabit fiber connection, so don't tell me my computer is at fault. Seems I'm not the only one with this issue, but haven't been able to find a solution. Will I have to stop using the core wallet in favor of something else?
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I don;t get you guys... I was on slush for a long time, but something is obviously not right these days. I've since switched to kano and I couldn't be happier. How long can you guys afford to stick around telling yourselves "it'll turn around soon.."?
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Hi ocminer,
Is it normal that the pool no longer responds to setting the speed in MH/s to set worker difficulty? I'm connecting with the proxy and specifying 700MH/s, but the pool is forcing a difficulty of only 80. Same thing happens with rigs connecting directly without proxy.
Thanks and Happy New Year!
Edit: Just read that the pool now uses static diff. Sorry!
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I'm pulling out for about 24h, going to try my luck over on the solo pool for the hell of it. Happy New Year to everyone! See you all on the flip side, stay safe.
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I'm happy with overclocking mine to 750MHz / 6Th/s.
6TH/s?? Do you mean 5TH/s, or do you know something I don't? 4.7 * 750 / 700 = ~5 Some of the earlier gens come at lower clocks, like 600hz, they have more chips so they can be overclocked to a much higher Hashrate. Not that this relevant to Kano CKPool. Yep, I'm talking about the uncrippled S7s with 162 chips. 6TH/s is not a typo. |
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Do we know for sure if DPS-2000BB is platinum rated? I thought 2880W was platinum rated until now.
It isn't officially rated, but I did test it. Unfortunately it's been a while, and I can't find my results anywhere, but going from memory I'm pretty sure I had measured 89% efficiency while pulling ~1500w DC from it. I'm thinking about retesting a bunch of power supplies and making a detailed thread out of the results. If I do, it will be an ongoing process starting possibly in the second week of 2016. |
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Dont over clock to far for to long i know a guy locally that fried 26 s7 miners overclocked to 900m ouch!
900MHz?! How much voltage was he pumping into them, 14v or so? Damn. I'm happy with overclocking mine to 750MHz / 6Th/s. |
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Prelude, I have just done quck pol restart and I see you are reconnected so all should be good with your old LTC and new doge address;) New features are comming in mail notification for your solved blocks and worker disconnects which are configurable inside your password if you want to use them of course. Just keep on eye on thread or pool home page for details They will be deployed with new server very soon probably next year  Great, thanks.  Been a pleasure mining on your pool so far! |
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I saw that link what i will do is get one I will run it with the one s-7 i have and compare it directly to the 2880w i have.
use the pdu meter. should be an easy direct comparision.
That was the only thing I knew to do as well. My PDU's have meters but they are whole numbers with no decimal points. It simply rounds off to the nearest whole number. I'm going to do a search to find something better if possible. By the way, I have the APC7911 "Switched" PDU's. I have not hooked them up yet. They too are metered. However, I'm not sure if they have decimal point or not. Do you? I have to run another 30A outlet to plug it in. I do not want to unplug the PDU's I have going at the moment. They have rigs mining on them. If you happen to know of something I can get on Amazon and/or eBay that can measure properly without spending too much money, let me know please. APC7911 has decimal points in the web interface, but not on the PDU its self. If you want a good/accurate meter, look into the Watts up? meter, the UO version of the .net version is ideal for this kind of testing. Elsewise, I think you'll be spending thousands for something better, like a fluke power meter/analyzer. |
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The 2000w PSU is not platinum, in fact it's silver but pretty close to gold. It's younger and stronger 2500w brother is gold rated, though. The 2880w beast is not actually platinum either, it is solidly in silver territory. I measured about 87% efficiency. Everyone confuses it with it's younger, slightly more buff 2980w brother the 39Y7414 is platinum, and much more expensive on ebay. We're all buying the 39Y 7349 which has no official efficiency numbers anywhere that I can find as it's too old to have been put through the 80+ testing program. My own testing though, puts it at about 87% efficiency at 50% load. Just curious, how did you measure efficiency? And did you compare it against a known 80+ tested PSU to verify your methods? Simply compared AC input to DC output, that's all it takes. I've also tested 3 different server PSUs that have been 80+ tested. One of them was rated 94.5% @ 50% load (PFE1100), I read 94.1% consistently, for example. That difference can be due to my equipment VS their testing equipment, the PSU could be a little tired, or likely both. My testing mythology is sound, but I would of course appreciate someone backing up the numbers I have posted about the 2880W-er. So you didn't take the Fan draw out of the equation I take it? That is part of the 80+ testing, as fan losses are subsidiary and not related to PSU efficiency, and the 3x60mm beastly fans that the 2880W PSU uses draw 1.68A or 20.5W each at full power (61.5W), which at the 50% load "testing" of 1440W would account for a margin of error of 4.27% alone. You should check out the testing procedure for 80+ certification: http://www.plugloadsolutions.com/docs/collatrl/print/Generalized_Internal_Power_Supply_Efficiency_Test_Protocol_R6.7.pdf I would also love to see someone else do an accurate test on them, as I was informed that they were in fact 80+ platinum just as the larger 2980W PSU. I have ordered 2x of the 2980W PSU's that I hope to put on a metered rack or ammeter and do some back to back testing vs the 2880W to see if there is an observable difference. Still far from an accurate test, but worth looking into I think. I'm replying in the other thread, this is off topic for the S7 thread. |
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I would also love to know the methods used to determine the 2880W PSU efficiency. The 80+ program is more involved than just measuring input amps and output amps from what I gather.
Actually, that's exactly how efficiency is determined. AC input watts VS DC output watts. There is no other way to measure it. Ecova (The company behind the 80+ efficiency program) uses hardware that is worth 5 digits to do the testing, meanwhile I'm using a $200 watt meter and a $300 amp clamp to measure DC output. My results will of course be a little less accurate, but very close nonetheless. I regularly compare my efficiency testing to the 80+ results, and I'm always very close to their results. Also, server PSU 80+ program is more stringent since they run on 230v. Don't confuse 80+ ATX number with 80+ server numbers:  I was wrong. 87% means the 2880W-ers are actually bronze rated, not silver. Did you power the fans externally? 4.4.4 Fan Load Considerations
for Single-output Power Supplies
In typical single-output
power supplies (typically used in the
rack mount servers and blade server
applications) the fans are sized not only to remo
ve heat from the power supply but also the heat
from the system. In order to facilitate the system
designer’s use of different
cooling strategies for
the system, the power consumed by the fan will not be included for efficiency calculations. If the
power supply has an internal fan, then the manuf
acturer will give provis
ion to supply external
power to the fan during the power
supply efficiency testing. If th
e power supply does not have an
internal fan and if it fails to operate during the
efficiency testing due to thermal cutoff, then an
external fan shall be used to
cool the power supply. The power
consumed by the external fan
shall not be included in the efficiency calcula
tions. In both cases th
e fan power used during
testing at each load setting
will be recorded for data colle
ction in determining industry
performance of efficiency
with and without fan power. That is just one small section of relevance in the testing procedure that would skew the numbers by up to 4.3% efficiency. I also wonder if Bitcoin miners are able to maintain constant load to within +-0.5%. Or if any criteria at all were observed from the 80+ testing procedure in order for you to "Certify" it as bronze. Again, I would love to see how you tested the units (equipment, conditions, etc). You'll have to forgive me for not simply taking your word for it. I find it extremely difficult to believe that the Bladecenter PSU's jumped from "Bronze" to Platinum rating overnight when they built the 2980W. I typed up a very long and detailed reply that for some reason didn't get posted when I hit "post". Pretty infuriating, and I'm not typing it up again so I'll be brief here. Fans were not powered externally, and I believe that to be disingenuous since no one will use a second power supply to power the main power supply's fan(s) in the real world. Most server PSU fans I've come across are 5-10w. These PSUs definitely use more juice with their fans. Don't think it's enough to bring efficiency down by any meaningful amount, much less 4.3%. Where did you get that figure? I've already described my testing methods to you. 20-25c ambient, Watts Up? Pro .net AC meter, $300 AC/DC amp clamp to measure DC amperage and multiply it by voltage measured at the load end of wires to account for vdroop. Some simple math then gives us efficiency numbers. IF you don't want to accept my methodology, I'm very open to suggestions to improve my process. It has proven to be very accurate when used with PSUs that have results posted by ecova, even when taking the fan into consideration. Furthermore, a 1500GH/s SP20E has consistently used less power at the wall using an actual platinum PSU vs the 2880W-er by a large enough amount. I do consider that a little unfair since 1 SP20E won't hit 50% load on the 2880w, but on the other hand the other PSU was close to 100% load which lowers it's efficiency. What you call overnight is actually a 5 to 6 year difference in engineering and manufacturing, a new (better) OEM, not to mention the adoption of PSU efficiency measures to reduce global power consumption of data centers and consumer IT and a shift to ever more efficient PSUs to meet those goals. The 2880w came before all of that. Don't see why you have such difficulty believing that it's possible. You'll have to forgive me for not taking your word that it's platinum when there is absolutely no proof of that anywhere to be found. I've only seen that it's platinum being parroted on this forum. I hope you'll do your own tests and post the results. Until then, the burden of proof is on you to prove it is platinum and not bronze. I hope you aren't taking this as a knock on you or j4bber. It is anything but. You guys sell what I consider to be the best server equipment for mining, and I know that you both believed the PSUs to be platinum rated. I know you wouldn't have sold them as platinum power supplies without believing that they were, and no one in their right mind will think that. Edit: With the exception of S4, what I've seen is a constant load from miners on the power supply. Never seen it move more than 0.1A while mining on S7, for example. |
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Yeah... Thread title needs to be updated. S7 is no longer 4.86TH/s or 0.25J/GH. Should read: ANTMINER S7 is available at bitmaintech.com with 4.73TH/s, 0.30J/GHSince bitcointalk is not accessible from mainland China due to the GFW, could a mod update the title? I'm sure bitmain would in the pursuit of honesty, but they simply can't due to circumstances. The last two I bought arrived with 1 dead board each. Maybe the title should read 3.1TH/s, 0.3J/GH? Heh, sounds about right. My B8 had a board die within a week, so also running at ~3.1TH/s right now. |
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The 2000w PSU is not platinum, in fact it's silver but pretty close to gold. It's younger and stronger 2500w brother is gold rated, though. The 2880w beast is not actually platinum either, it is solidly in silver territory. I measured about 87% efficiency. Everyone confuses it with it's younger, slightly more buff 2980w brother the 39Y7414 is platinum, and much more expensive on ebay. We're all buying the 39Y 7349 which has no official efficiency numbers anywhere that I can find as it's too old to have been put through the 80+ testing program. My own testing though, puts it at about 87% efficiency at 50% load. Just curious, how did you measure efficiency? And did you compare it against a known 80+ tested PSU to verify your methods? Simply compared AC input to DC output, that's all it takes. I've also tested 3 different server PSUs that have been 80+ tested. One of them was rated 94.5% @ 50% load (PFE1100), I read 94.1% consistently, for example. That difference can be due to my equipment VS their testing equipment, the PSU could be a little tired, or likely both. My testing mythology is sound, but I would of course appreciate someone backing up the numbers I have posted about the 2880W-er. |
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The 105 watts saved for each S7 I'm running adds up.
Seem like a big difference. It should be 2~% efficiency difference between Gold and Platinum. You're talking about an efficiency difference that sound more like Bronze vs Plat than Gold vs Plat. You may be correct. I'm not familiar with what percentage puts one in silver, gold, platinum and titanium. Maybe I should not have used that terminology. However, I believe if one looks at the actual numbers, they can see the logic behind the power savings which opens up more available power for more revenue. EDIT: By the way, Prelude, did say the 2880 is more in "silver" territory than gold or platinum. I quoted him in my post above.If the difference is actually 8%, then yes, thats pretty big. 86% efficiency at 8X% load would be silver efficiency and 91% would be platinum. https://en.wikipedia.org/wiki/80_PlusIt would be a good idea to double check what efficiency those PSU are supposed to make to make sure the watt difference is not a Fluke, because a 8% difference in efficiency is HUGE. Look at the following link for the numbers on the 2980... There are no numbers on the 2880 except for those done by members in the forums. Prelude used a watt meter to check the efficiency at 50% load for the 2880. He said it was more like 87% at 50% load. Here is the link for the 2980: http://www.plugloadsolutions.com/psu_reports/IBM_39Y7414_2980W_SO-188_%20Report.pdfEDIT: There is a possibility I'm off by 1%. Even at 1% off on my figures, the 2980 is still very much worth getting IMHO if one is using MANY PSU's with MANY rigs. What i'm thinking is the efficiency difference should be about 1%. A 8%, even 7% does not make sense. I'm not sure what's up with all that, maybe the 2880 tested were bad? I think this warrant more testing before throwing an extra 5-10k into 2980's. I'm curious as to why you think there should only be a 1% difference? The 2880w models were put into production in ~2005. The 2980w models were put into production late 2010. A lot changed in the PSU manufacturing world in those 5 years. 80+ didn't even exist in 2005 I think.. The 7% difference in efficiency is very easy to believe. Put it this way.... Look how far bitcoin miners have come in the last 5 years in terms of efficiency. Hell, even the last year alone. Now imagine where we'll be in 5 years. Only 1% more efficient? I don't think so. I would also love to know the methods used to determine the 2880W PSU efficiency. The 80+ program is more involved than just measuring input amps and output amps from what I gather.
Actually, that's exactly how efficiency is determined. AC input watts VS DC output watts. There is no other way to measure it. Ecova (The company behind the 80+ efficiency program) uses hardware that is worth 5 digits to do the testing, meanwhile I'm using a $200 watt meter and a $300 amp clamp to measure DC output. My results will of course be a little less accurate, but very close nonetheless. I regularly compare my efficiency testing to the 80+ results, and I'm always very close to their results. Also, server PSU 80+ program is more stringent since they run on 230v. Don't confuse 80+ ATX number with 80+ server numbers: I was wrong. 87% means the 2880W-ers are actually bronze rated, not silver. |
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Let me know if you have one for sale. Looking for a batch 1,2,3,4,5, or 7. Thanks |
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Very nice! May I ask why the older revision PSUs fetch a slightly higher price?
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