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ComputerGenie
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June 19, 2017, 04:26:27 PM |
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...So far since last September (9 months ago)
Lost 3 R4 boards (out of 12 total) (One was resuscitated by reprogramming the PIC with a copy from a good board, one was repaired by BitmainWarranty, one is left as failed and won't be repaired)
Lost 3 S9 boards (out of 12 total) (One was repaired by BW, two are left as failed and won't be repaired.)....
Out of curiosity, what were the settings you used (automatic or manual) and what were the physical conditions under which these miners were operating (ambient temps, airflow, type of room, etc.)?  |
If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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Once a transaction has 6 confirmations, it is extremely unlikely that an attacker without at least 50% of the network's computation power would be able to reverse it.
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captinkid
Newbie
 Offline
Activity: 38
Merit: 0
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June 19, 2017, 04:29:33 PM
Last edit: June 19, 2017, 04:50:14 PM by captinkid |
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They are all pre autotune units running original firmware at the original clock rate. My fail miners (one r4 and one s9) hosting the failed boards were updated to the autotune software for giggles and testing purposes but that was after the boards failed running on their original hardware and software. They are in a cool room with air temps under 80F year round, and a clean, dry environment with stable power. Let's just say I have a bunch of other equipment (About half a dozen servers and GPU setups) that have had a 0% failure rate in the same room on the same power. Different equipment same conditions, one with an obviously higher failure rate. Of course comparing the QC of a company like IBM or HP to Bitmain is kind of apples to oranges. One obviously doesn't put the same care into their product to test long term quality. I'd prefer they raise prices a little and raise the QC bar, but it's their business and their choice. I'm sure if I get enough quality servers and GPUs I'll run into a failure at some point, it can't stay 0% forever. But those companies also offer much better warranties and servicing if that happens.  |
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ComputerGenie
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June 19, 2017, 06:12:17 PM |
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... Let's just say I have a bunch of other equipment (About half a dozen servers and GPU setups) that have had a 0% failure rate in the same room on the same power.
Different equipment same conditions, one with an obviously higher failure rate...
And all of those are running at 100% load 100% of the time? |
If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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Entropy-uc
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June 19, 2017, 06:40:19 PM |
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Has anyone determined the size of each batch of orders Bitmain has been releasing? Based on network difficulty it seems like they are shipping 20k+ S9s per week, but that's just a swag on my part. Does anyone have actual data?
I think this may become particularly pertinent as their shipping backlog becomes longer and longer. And more so if they follow suit with their decision to price their latest batch of L3+ units in LTC (at a huge price increase as well). With 3 full batches shipping ahead of these it seems like the LTC network difficulty could be 10x larger when they ship and ROI chasers could be bankrupted as we saw happen in 2014.
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ComputerGenie
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June 19, 2017, 06:44:11 PM |
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Has anyone determined the size of each batch of orders Bitmain has been releasing? Based on network difficulty it seems like they are shipping 20k+ S9s per week, but that's just a swag on my part. Does anyone have actual data?
I don't think they have ever made those numbers public (from any batch). |
If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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captinkid
Newbie
Offline
Activity: 38
Merit: 0
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June 19, 2017, 09:27:46 PM |
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... Let's just say I have a bunch of other equipment (About half a dozen servers and GPU setups) that have had a 0% failure rate in the same room on the same power.
Different equipment same conditions, one with an obviously higher failure rate...
And all of those are running at 100% load 100% of the time? Yes everything is full load, like I said the only difference is build quality. And yes you can still make money on them, there is still profit to be had, but the ROI isn't as rosy as the stats would have you believe. Reduce your hash rate calculation by 25% over the long term and calculate using that number instead, you'll be much more accurate. |
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ComputerGenie
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June 19, 2017, 09:39:16 PM |
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... Let's just say I have a bunch of other equipment (About half a dozen servers and GPU setups) that have had a 0% failure rate in the same room on the same power.
Different equipment same conditions, one with an obviously higher failure rate...
And all of those are running at 100% load 100% of the time? Yes everything is full load, like I said the only difference is build quality. And yes you can still make money on them, there is still profit to be had, but the ROI isn't as rosy as the stats would have you believe. Reduce your hash rate calculation by 25% over the long term and calculate using that number instead, you'll be much more accurate. The main reason I ask all of this is, on the business end, we have less that 4% failure rate and on my hobby miners (all overclocked and in a cross-ventilated building that fluctuates between 70-85F) I have 1 bad board in 15 (and that 1 was a 600 that ran @ 700 for 6 months). Conversely I've never purchased more than 3 sticks of RAMM at a time without at least one needing a replacement. I guess we each get the lemons of a given industry?  |
If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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Ahasan
Member
Offline
Activity: 196
Merit: 10
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June 19, 2017, 09:51:52 PM |
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That's great work bitmain.I have a question, Can I use this miner to mine any other coins?
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HagssFIN
Legendary
Offline
Activity: 2436
Merit: 1706
Electrical engineer. Mining since 2014.
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June 20, 2017, 03:30:48 AM |
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That's great work bitmain.I have a question, Can I use this miner to mine any other coins?
You can mine any SHA-256 coin with this miner.. |
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Ahasan
Member
Offline
Activity: 196
Merit: 10
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June 21, 2017, 04:33:17 PM |
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That's great work bitmain.I have a question, Can I use this miner to mine any other coins?
You can mine any SHA-256 coin with this miner.. Thanks for your answer.Please reply me, Which altcoins more profitable to mine? |
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jekecoin
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June 21, 2017, 07:14:56 PM |
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That's great work bitmain.I have a question, Can I use this miner to mine any other coins?
You can mine any SHA-256 coin with this miner.. Thanks for your answer.Please reply me, Which altcoins more profitable to mine? You can watch it on coinwarz or whattomine |
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HagssFIN
Legendary
Offline
Activity: 2436
Merit: 1706
Electrical engineer. Mining since 2014.
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June 21, 2017, 08:30:43 PM |
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Thanks for your answer.Please reply me, Which altcoins more profitable to mine?
You can watch it on coinwarz or whattomine
^ This. Bitcoin is usually the most profitable in long term.. Peercoin usually second. |
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ComputerGenie
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June 21, 2017, 09:02:15 PM |
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...Bitcoin is usually the most profitable in long term..
Peercoin usually second.
Only if you mine one single coin (instead of switching based on current given profitability). If you solo-mine and switch between multiple coins, most days will pay no less than 1.5x what you would make in a pool mining just bitcoin.  |
If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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HagssFIN
Legendary
Offline
Activity: 2436
Merit: 1706
Electrical engineer. Mining since 2014.
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June 21, 2017, 09:37:47 PM |
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...Bitcoin is usually the most profitable in long term..
Peercoin usually second.
Only if you mine one single coin (instead of switching based on current given profitability). If you solo-mine and switch between multiple coins, most days will pay no less than 1.5x what you would make in a pool mining just bitcoin. Yes. I only answered for a single-coin situation. |
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Kryptowerk
Legendary
Offline
Activity: 2030
Merit: 1401
Disobey.
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June 22, 2017, 10:34:24 AM |
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As I understand the s9 is still the fastest/most effective miner in the world. I was wondering, are there any news or indications that a new, faster asic will be released soon?
Just two weeks ago there was a very high bump in difficulty - could this be because of new "unreleased" hardware going online somewhere in the world?
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ComputerGenie
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June 22, 2017, 10:44:56 AM |
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As I understand the s9 is still the fastest/most effective miner in the world. I was wondering, are there any news or indications that a new, faster asic will be released soon?
Just two weeks ago there was a very high bump in difficulty - could this be because of new "unreleased" hardware going online somewhere in the world?
More likely that has to do with the fact that the cost of an S9 has been under 0.4BTC for a while now. |
If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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mustangy
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June 23, 2017, 05:44:06 AM |
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get 5 of s9
and it is all about aug 1 segwit the price will sky rock or goes down to hell like crazy we ll see..
and they double l3+ price in a month first to 1300$ and now $2000 +
my main concern is any one bought 10 4 of them had usually board problem and it is mention by a lot of user bitmain sales whole sales to big clients and those sold to consumers are usually the machines that can not pass quality control how come 4 of 10 machines stop work in a few week crazy
i guess i just gambled to 5 of them august batch and we ll see
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always have antminers and psu for sale please dm
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CryptoCrane
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July 04, 2017, 11:45:40 AM
Last edit: July 06, 2017, 05:54:03 PM by CryptoCrane |
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FYI - It looks like Bitmain is shipping their July 5-15 batch a little early. We have another 100 units that just shipped and are due to be delivered July 6th 10th.
I've noticed a common perception in this thread that the S9 series has a high failure rate. I thought I'd share that our failure rate across 350 units has averaged around 3.9%. Perhaps that is a high failure rate compared to the S7 series, but it's a lot less than this thread would lead you to believe.
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edonkey
Legendary
Offline
Activity: 1150
Merit: 1004
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July 04, 2017, 03:04:02 PM |
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I've seen 16% board level failure rate. I don't have nearly as many units as you, so this might not be statistically relevant.
My previous failure rate with a similar number of S3 and S7s was zero.
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Was I helpful? BTC: 3G1Ubof5u8K9iJkM8We2f3amYZgGVdvpHr
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camelio
Newbie
Offline
Activity: 7
Merit: 0
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July 07, 2017, 06:49:31 AM |
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Everyone on your site is complaining that they have placed orders and have no confirmation of payment. Why is there no confirmation of payment and you stopped accepting Paypal or debit cards? You need to be more professional, I want to make big orders, but everyone complains on your site they have no confirmation weeks after payment. How are you dealing with this?
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