So it's better to buy the 2980W 39Y4714 if you are into mining long term. It should be compatible with the Finksy 2880W board, right? If so I may buy 39Y4714 model from now on.
I think J4bberwock's board should still work fine with it. I'm going to find out. If it works fine, that's all I'm getting from now on. I wish I knew about it sooner before I got the 18 x 2880's I have now. |
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Happy Days!!  Thanks Hurricanedave.. Seems you have some lucky machines:) Much appreciated!! Best Regards d57heinz I want to know what rigs he is using? What diff he has set manually on particular rigs, if any? etc. All of us could share these type of things with one another to possibly increase our odds of maybe finding more blocks as a pool. |
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SweeeeeeeeT  |
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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. The 2980W 39Y 4714 shows a little over 94% efficiency at 50% load verses the 1880W 39Y 7349 at your stated 87% at 50% load. So, let me make sure I understand this correctly; If we had an S7 that we knew consumed 1210 watts [And used a 2980W 39Y7414 with 93% efficiency with approximately 40.6% load] we should see about 1,301 Watts at the wall on a watt meter. AND If we had an S7 that we knew consumed 1210 watts [And used a 2880W 39Y7349 with 86% efficiency with approximately 42.0% load] we should see about 1,407 Watts at the wall on a watt meter. 105 watts difference. It would be about the same with 2 x S7's on each PSU I believe. Let me see: If we had 2 x S7's we knew consumed 2420 watts combined [And used a 2980W 39Y7414 with 93% efficiency with approximately 81% load] we should see about 2,602 watts at the wall on a watt meter. AND If we had 2 x S7's we knew consumed 2420 watts combined [And used a 2880W 39Y7349 with 86% efficiency with approximately 84% load] we should see about 2,813 watts at the wall on a watt meter. So, my math is showing about 105 watts extra has to be burnt to power an S7 with the 2880W verses the 2980W. If we had 20 x S7's and burnt 105 watts more per S7 with the 2880W PSU, that would be 2100 more watts burnt. The price difference between each PSU is approximately $75 to $85. Let's use the $75 difference... Converting that 2100 watts (2.1 kW) more power into dollars when using 10 x 2980's to power 20 x S7's: 730 hours in a month x 2.1 kW per hour = 1,533 kWh's in a month 1,533 kWh's x $0.10 per kWh = $153.30 saved in a month [All 10 x 2980W's paid for in 9.785 months; the price difference between 2980W & 2880W made up in 5 months] 1,533 kWh's x $0.09 per kWh = $137.97 saved in a month [All 10 x 2980W's paid for in 10.87 months; the price difference between 2980W & 2880W made up in 5.435 months] 1,533 kWh's x $0.08 per kWh = $122.64 saved in a month [All 10 x 2980W's paid for in 12.23 months; the price difference between 2980W & 2880W made up in 6.115 months] 1,533 kWh's x $0.07 per kWh = $107.31 saved in a month [All 10 x 2980W's paid for in 13.98 months; the price difference between 2980W & 2880W made up in 7 months] 1,533 kWh's x $0.06 per kWh = $ 91.98 saved in a month [All 10 x 2980W's paid for in 16.31 months; the price difference between 2980W & 2880W made up in 8.15 months] 1,533 kWh's x $0.05 per kWh = $ 76.65 saved in a month [All 10 x 2980W's paid for in 19.57 months; the price difference between 2980W & 2880W made up in 9.785 months] 1,533 kWh's x $0.04 per kWh = $ 61.32 saved in a month [All 10 x 2980W's paid for in 24.46 months; the price difference between 2980W & 2880W made up in 12.23 months] 1,533 kWh's x $0.03 per kWh = $ 45.99 saved in a month [All 10 x 2980W's paid for in 32.62 months; the price difference between 2980W & 2880W made up in 16.31 months] |
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SweeeeeeeeeT Hi Mr. Block |
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Time warner is experiencing huge outages nation wide. I'm on my backup wan now.
Cincinnati Ohio
I see you and usukan both are on Eastern Standard Time. Which means it's quite possible both of you are on Time Warner. Sounds logical. |
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60% of my miners just dropped out on failover - have returned to Kano now but this is getting quite regular now.
Is this my problem (network/miner etc) or some other network issue?
Cheers
Not sure... Mine are fine. Especially, since 60% of yours and not all of yours dropped off, it may very well be on your end. |
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At 700MHz they're pretty much tapped out, and overclocking is not an option until we figure out how to control voltage. My OG S7s run at 6TH/s in comparison with overclocking.
I totally agree with you. I'm coming close to making the decision to go ahead and under clock these back to 600 MHz from the 700 MHz factory setting. If I'm not mistaken, the batch 6 (135 chips) were clocked at 600 MHz and hashed at 4.0 TH/s? I'm thinking about treating the new 135 chip rigs as batch 6 and under clock all of them to 600 MHz for longevity. I got batch 6...it is totally stable being overclocked to 625, a bit less stable (or maybe less efficient?) at 650, so I will try either of these two instead of just 600, if you have room on PSU. The funny thing, if you remember as everyone was saying that B1 "likes' heat-~60C. In my observation, B6 "likes" being cold-I got better speed and less errors at 41-45C (same goes for B7, interestingly). 625-4.15-4.2 TH (1090W at the wall); 4.3 TH at 650 (1150W) Thanks for sharing this info, Biodom |
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Well i could grab a one IBM kit from Finksy, that would work for 2 S7 too. Still the problem remain getting access to 240v. Beside my oven, i don't see how. And on 120v, the S7 is a big piece.
I would be much happier if the S7 was a 2 board thing. 800-1000w would be very manageable and it would be easier to OC.
I don't want to tell you what to do in your apartment; in terms of getting access to 240 volts. I would recommend talking to an electrician or the maintenance person for the apartments to see about access to 240 volts. You might be surprised to find the maintenance person will be cooperative and help. Especially, if you provide the wiring, breaker and outlet; along with some extra cash. |
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At 700MHz they're pretty much tapped out, and overclocking is not an option until we figure out how to control voltage. My OG S7s run at 6TH/s in comparison with overclocking.
I totally agree with you. I'm coming close to making the decision to go ahead and under clock these back to 600 MHz from the 700 MHz factory setting. If I'm not mistaken, the batch 6 (135 chips) were clocked at 600 MHz and hashed at 4.0 TH/s? I'm thinking about treating the new 135 chip rigs as batch 6 and under clock all of them to 600 MHz for longevity. |
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Went ahead and bought some more S7s Batch 8. These are my first Batch 8. I am hoping these will be good for the long run!
i received 2 b8 yesterday & each of them messed up. 1 dead board 0 temps with lovely dashes, nothing could revive them. shows 30 instead of 45 chips. if test with single board it shows 0 temp & 48 magical chips but do not hash. the other had a almost dead board with low hashrate, high hw error, low temp (5 or more C) lower than other 2 boards. once i disconnected the problematic board the other 2 works perfectly no issues. i sent 1 board from b5 last week n half ago. bmt just received it. this is badddddddd Sorry to hear that yslyung. It sounds like you have been a bit more unfortunate than most. Hopefully, things can only get better... |
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He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so. Yeah i'm in an appartment so i don't have a lot of options when it comes down to 240v. Well, i could like, unplug my oven and find a way to bring that 240v all the way to the living room window, then with 40A available i could get those. Is that the two PSU you plug with one jabberwock board and you can control voltage and power like 3 S7? That is correct. You could power 3 x S7's IF they were about 1333 watts each or less. Others here would be able to give you advice as to whether it's okay to do that or not. I say this cause 3 x S7's would be pushing the 2 x IBM 2000 BB's to their limits. I have little experience with the IBM 2000 BB's. I'm about to get a couple of them to go along with a new J4bberwock breakout board for them. All of my PSU's are IBM 2880's with J4bberwock breakout boards. |
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He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.
Thanks Prelude... Yeah, I saw that after reading it again and edited my post. |
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My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz.
DAAAAAAAMN... That's more than I anticipated. What was your RPM's on the fans and temps please? |
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Easy now...
I agree with your sentiment, in general, but in this case I expect someone who has spend good money on a top of the line miner to, at the very least, understand the absolute basics of mining. They should know what network difficulty is and what it takes to solve a block, otherwise what are they doing? They should understand what the pool they have their miner pointed to mines, otherwise what are they doing? Being ignorant in these basic things is inexcusable in this case, it has nothing to do with being knowledgeable in a particular field - I'm not talking about programming ASICs or building hardware, I'm talking operating a bitcoin miner 101. If all you know is to plug in the miner and watch the "blocks found" field for a change from 0 to 1 then you are doing it wrong. Don't you see how "easy" ASIC's have made it for ANYONE to mine now with very little knowledge on the subject of mining itself. It takes very little "knowledge" to hook up an ASIC and set it up to point it at a pool. They provide instructions with the ASIC to do this. As for all of the other knowledge in relation to bitcoin mining; that does not come with the ASIC. Yes, you are "...talking operating a bitcoin miner 101." It's nothing to "operating" one; in the sense of doing what the instructions tell you to do to hook it up and set it up. The instructions do not tell you what is involved with solving a block, etc... I agree, that is "basic" knowledge but he and many others have just begun by hooking up there rig(s) and pointing them here per the instructions. They are depending on what information others are kind enough to provide in the forums in terms of "basic" knowledge after setting up and pointing their rig(s) at a pool. Lets give the guy a break. Hell, I will admit I did not know this when I first started. I simply hooked up my miners [18 x S3's at the time (September 22, 2014)] per the instructions and learned as I went along. I'm still learning all the time. The more I learn, the more I find I need to learn. If I [Or anyone else] is to be demeaned for not knowing every little detail about mining before buying ASIC's, hooking them up and setting them up per the instructions, so be it. It's your prerogative... You say, "If all you know is to plug in the miner and watch the "blocks found" field for a change from 0 to 1 then you are doing it wrong." If that's the way you feel, then fine. All I'm saying is, you can tell someone "...they are doing it wrong" in a more respectful way [That does not demean them] and patiently instruct them on what they should do that is correct; in terms of paying attention to temps, HWE's, how to under clock and over clock, etc. Much of this can be learned from reading other forums where people were kind enough to take the time out of their day to explain HOW to do, WHAT to do, WHEN to do, and WHY? You're actually implying they should have never bought an ASIC if they did not know these basics before setting up and hooking up their rig(s) per the instructions. I disagree... We have many new miners coming to the fold. Some with small amount of hash and some with relatively large amounts of hash. We could use as many of them here in the pool as possible. I take the time on occasions to send PM's to miners [Especially newbies] to try to encourage them into the fold. Why? Because most of those who have mined for a while have already made their decision where they will point their rigs [For the most part]. It's the relatively new ones [Full member and lower] we need to market the pool to. The last thing I need is someone to discourage someone from staying here after I invested the time to encourage them to point their rigs here. All I'm saying, is we can have more of a sense of brotherhood/family in the pool forum if we take the time to assist those new to mining in the little details without demeaning them. Those who have been in the mining game for a while have already chosen the pool they will stay with for the most part. New miners who come along looking for a pool [A home] to stay with could use our encouragement to stay with us and our knowledge to understand and grow. A new member might be more appreciative and more likely to stay with us than to leave and go elsewhere if we assist them [With humility in mind] instead of belittling them. That's all I'm trying to get you [And any other pool member for that matter] to understand. If all we want here are pool members who have everything about mining down pat, this pool is in for a rough ride. Especially, if we turn away those who come along in search for a pool they can call "Home" to point their rigs [No matter whether they are big or small]. There is strength in numbers. The more members the merrier [Whether they are new miners or more experienced]. |
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Easy now... Lets please be kind to one another. If someone does not know the answer to something, they simply do not know. Let's not belittle them. Who knows, they may be very knowledgeable in a particular field that you are ignorant of. Does that mean they are smarter than you or should belittle you? No...
Just because we know something about a particular field or subject does not mean we are smarter than the other. We more than likely taught ourselves or someone told us. Bottom line, the knowledge we gained came from someone else [in most cases] who was generous and kind enough to share it. We should have gratitude for their willingness to share and pass it along with kindness. If we lack the patience and humility to share it with kindness, it's best we not say anything at all.
Bottom line: If we know the answer to something, it does not mean we are smarter than the other. Let's go easy on one another please... to encourage interest to gain knowledge about bitcoin mining and the blockchain and to encourage brotherhood/family in this pool as well.
David
BY THE WAY, Block Found!
Good Job, Hashratech.
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Hi e46btc
I can see that the network diff has risen, but the basic same 93G network diff was paid out on by the 40ph pool over the last 3 days is basically same diff as the 24th payout that I listed and got paid here at Kano's, yet I earned quite a lot more elsewhere, again because the 40ph pool found 3 to 6 blocks per day, and the Kano even paying back for work done as part of the 5Nd doesn't make up those extra block payments I received elsewhere.
This is why I said I think there's something like a sweet spot, which when Kano pool was at 2ph and with me being one of the smaller pool hash supporters, it actually worked out and paid out ok, but now that its gone to 6ph it doesn't, suspect this will change when the pool becomes bigger, because as it finds more blocks per day, it will probably make it worthwhile again, as I found with the 40ph pool that I just joined, where the S3 is an even smaller part of the total hash rate than I am here at Kano, but I am earning more.
from the stats page, its simple to see that now with the pool at 5.75ph, that those over 50TH which is less than 20 of the top users are actually making up over 4ph of the 5.75ph. so 300 of the 340 users are sharing 30% of the payout, It could be that those top 20 users at Kano, find the opposite to me, that because they take 70% of the reward for the block, they earn more at Kano than if they were smaller 50% or 40% hashers of a slightly larger 25ph pool, so that dragging along an extra 2ph of slower S3 and S5 users at Kano makes this 5.75ph their sweet spot pool.
The only way here at Kano's pool that I can currently see to make the same as a month ago, is to buy three times the miners, but I would be spending to make no extra.
So for now I think pointing them elsewhere is making it worthwhile, I am a smaller tiny fish in their 40ph, but many payments per day actually seems to be giving me better returns.
Ste
1 miner @ 13,400 TH/s 2 miners @ 6,225 TH/s combined 2 miners @ 3,273 TH/s combined 3 miners @ 2,416 TH/s combined 2 miners @ 727 TH/s combined 12 miners @ 2,255 TH/s combined22 miners have 28,296 TH/s combined Slush Pool Hash Rate @ 40,096 TH/s Top 22 miners have 70.57% of the pool hash rate Active Users on Slush pool is approximately 5,022 users (miners) and 22 of those 5022 have over 70% of the pool hash rate. This means 5,000 miners are sharing 30% compared to maybe 310 sharing 30% here at kano.is Active workers (rigs) approximately 17,000. Now, compare Slush numbers to your numbers about kano.is top miners having 70% of the pool hash rate... |
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Last three months i was on different pool . Eventually all pool pay in same range with PPS system.
With PPLNS -With current rate (As Hash power increase on Kano)_we must find 2 blocks a day to get paid better than PPS.
In month of Oct 1 block a day using PPLNS was enough get paid more than PPS system.
Above is general conclusion.
If i am wrong consider as a mistake...correct the mistake and we move on.
Thanks
Sky
Our present pool hash rate as of this writing is 5,665 TH/s. If you enter in that hash rate on Bitcoinwisdom.com/bitcoin/difficulty, you will see that amount of hash rate should earn approximately 30.49 BTC per day at present difficulty of 93,448,670,796. If you divide 30.49 BTC by 25 BTC per block, that would be 1.2196 blocks per day. This [more or less] means the pool needs to find 5 blocks every 4 days on average to maintain 100% luck at current pool hash rate and current difficulty. So, the math I have demonstrated disproves your assumption that... "we must find 2 blocks a day to get paid better than PPS."David EDIT: If we found 1.2196 blocks a day [Or, 5 blocks in 4 days], we actually got paid better than PPS. Especially, if you factor in the fees of 2.5% to 3.6% fees of PPS compared to the 0.9% fee here. The only way to know this for sure is to stay on here 30 days minimum. Even then is not quite good enough to compare. You would need to stay on here 3 to 5 months to see for sure. If you tried this only 8 days to see if we find 10 or more blocks in those 8 days, that may not be enough because it depends on when you entered for those 8 days. You may have started mining shortly after a day where 2 blocks were just found. Also, it would take you close to 5 days to reach full payout. So, if any one tried this pool out to compare it to other pools in terms of payout, you would need to be on here 13 days minimum. But like I said, that's not giving the pool proper time to compare to a PPS pool. |
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