You know, if Bitmain is going to sit on our orders for a week during their national holiday, the least they could do is give us a web cam in their data center so we can watch our S7's make money for them 
A "convenient" burn-in test
Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 338. (Read 528055 times)
September 29, 2015, 09:54:02 PM
A "convenient" burn-in test
September 29, 2015, 09:49:20 PM
You know, if Bitmain is going to sit on our orders for a week during their national holiday, the least they could do is give us a web cam in their data center so we can watch our S7's make money for them
September 29, 2015, 09:45:22 PM
That 1500w comment from bitmain is total bullshit. I'm certain -droid-'s test tomorrow will prove that.
Maybe these sub par machines have lower quality chips? Perhaps a slight voltage bump would help some of the ones running on ATX PSUs which supply as close to 12v as possible? Most server PSUs including the ever popular 2880w and DPS2000 will put out 12.2v.
Maybe these sub par machines have lower quality chips? Perhaps a slight voltage bump would help some of the ones running on ATX PSUs which supply as close to 12v as possible? Most server PSUs including the ever popular 2880w and DPS2000 will put out 12.2v.
Has anyone with a sagging miner checked the output on their psu for any variance on the 12v rail with a multimeter?
Does anyone have some that are working and others that are not to compare the rev on the hashing board?
Ufo
Would be nice if a few people could verify that. Please make sure you take the 12v reading on a PCI-e connector that is plugged to a blade and not an unused wire as there is a voltage drop that needs to be accounted for across the loaded wires.
September 29, 2015, 09:25:00 PM
That 1500w comment from bitmain is total bullshit. I'm certain -droid-'s test tomorrow will prove that.
Maybe these sub par machines have lower quality chips? Perhaps a slight voltage bump would help some of the ones running on ATX PSUs which supply as close to 12v as possible? Most server PSUs including the ever popular 2880w and DPS2000 will put out 12.2v.
Maybe these sub par machines have lower quality chips? Perhaps a slight voltage bump would help some of the ones running on ATX PSUs which supply as close to 12v as possible? Most server PSUs including the ever popular 2880w and DPS2000 will put out 12.2v.
Has anyone with a sagging miner checked the output on their psu for any variance on the 12v rail with a multimeter?
Does anyone have some that are working and others that are not to compare the rev on the hashing board?
Ufo
September 29, 2015, 09:18:02 PM
That 1500w comment from bitmain is total bullshit. I'm certain -droid-'s test tomorrow will prove that.
Maybe these sub par machines have lower quality chips? Perhaps a slight voltage bump would help some of the ones running on ATX PSUs which supply as close to 12v as possible? Most server PSUs including the ever popular 2880w and DPS2000 will put out 12.2v.
Maybe these sub par machines have lower quality chips? Perhaps a slight voltage bump would help some of the ones running on ATX PSUs which supply as close to 12v as possible? Most server PSUs including the ever popular 2880w and DPS2000 will put out 12.2v.
September 29, 2015, 09:14:41 PM
1 of my S7s is exactly the same. I was getting 4300th/s at 600. I dropped it to 593 and got about 4400. As a test I have been running at 575 and it is a steady 4400th/s.
What PSU are you using? Are you using the server one bitmain sells, APW3-12-1600-B2?
September 29, 2015, 08:51:59 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
sorry to hear this, but I thought that you got a couple.
is second similar to the first one?
yes both were able to do 4750, 4775 = 4625 but after a week burn in they sagged a bit.
I find that freq at 500 is better so frankly 500/600 = 83.3 % this is 16.7% short .
I paid about 7.8btc so I should get about 1.3 btc refund.
Now they will argue that at 600 I get say 4400 th which is 91.67% or about 8.33% short which is about a .65 btc refund.
1 of my S7s is exactly the same. I was getting 4300th/s at 600. I dropped it to 593 and got about 4400. As a test I have been running at 575 and it is a steady 4400th/s.
September 29, 2015, 08:50:15 PM
Anyone running the APW3-12-1600-B2 server psu with the s7 that is experiencing the sagging? Those are the ones I bought for my s7's since this was a new build.
September 29, 2015, 08:48:31 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
Sound pretty subpar, like the first batch of S3's iirc and not all that different with S5 batch one? Maybe you're illegible for a partial refund? Kinda disappointing that Bitmain keep repeating the same error with First batches.
Like this S5 Batch one?.....
September 29, 2015, 08:45:58 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
I'm in same boat man.. Buck luckily one of mine is a good one, second one is a dud like yours. Did you try 593? Seems mine likes that so far, we will see if she holds though
Bitmain emailed me agn saying it's probably due to PSU variance, that running two on a single 2880w PSU isn't ideal as each of them need 1500w at minimum to function fully.. I dunno if I should believe this?
And yeah the sagging after awhile is totally legit.. My dud unit over the course of the weekend dropped 600gh down to 3.9TH
Not a ton of PSU's are in that range. Seems like they are saying to use their server PSU with it - https://www.bitmaintech.com/productDetail.htm?pid=000201505040743496917U7kGsCm0694 1600w would make it one of the best for the job if their recommendations are correct.
If you have only the "dud" plugged in to the 2880w do you get better results?
That's going to be my task tomorrow.. Once I set them up initially I haven't mesed with them, other than a hard reboot after the weekend when the one was hashing at 3.9
September 29, 2015, 08:43:21 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
I'm in same boat man.. Buck luckily one of mine is a good one, second one is a dud like yours. Did you try 593? Seems mine likes that so far, we will see if she holds though
Bitmain emailed me agn saying it's probably due to PSU variance, that running two on a single 2880w PSU isn't ideal as each of them need 1500w at minimum to function fully.. I dunno if I should believe this?
And yeah the sagging after awhile is totally legit.. My dud unit over the course of the weekend dropped 600gh down to 3.9TH
Not a ton of PSU's are in that range. Seems like they are saying to use their server PSU with it - https://www.bitmaintech.com/productDetail.htm?pid=000201505040743496917U7kGsCm0694 1600w would make it one of the best for the job if their recommendations are correct.
If you have only the "dud" plugged in to the 2880w do you get better results?
September 29, 2015, 08:40:06 PM
I am really interested in the performance thread philipma1957 created now for personal interest. This is super disappointing, I hope it doesn't continue to sag for you philipma1957. This may explain why they have three batches.....maybe they will swap them out or give you a more reasonable refund on the performance difference.
Think of all of the large mining companies that are offline now about to come online after refitting. I am curious if the jump in difficulty will be as huge as everyone was expecting.
Ufo
Think of all of the large mining companies that are offline now about to come online after refitting. I am curious if the jump in difficulty will be as huge as everyone was expecting.
Ufo
September 29, 2015, 08:34:41 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
I'm in same boat man.. Buck luckily one of mine is a good one, second one is a dud like yours. Did you try 593? Seems mine likes that so far, we will see if she holds though
Bitmain emailed me agn saying it's probably due to PSU variance, that running two on a single 2880w PSU isn't ideal as each of them need 1500w at minimum to function fully.. I dunno if I should believe this?
And yeah the sagging after awhile is totally legit.. My dud unit over the course of the weekend dropped 600gh down to 3.9TH
September 29, 2015, 08:27:29 PM
Thank you for the information. Do you have the exact date of your order?
Power Supplies - 2015/09/04
More Power Supplies and nine S7's - 2015/09/08
September 29, 2015, 08:23:40 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
Shit, I thought that locked thread you created was for anti-trolling feedback. Now I am worried since I have nine on the way. sldkjfl;aksldkfjlaskjdflk
Ufo
/set mode worried 1
September 29, 2015, 08:19:53 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
sorry to hear this, but I thought that you got a couple.
is second similar to the first one?
yes both were able to do 4750, 4775 = 4625 but after a week burn in they sagged a bit.
I find that freq at 500 is better so frankly 500/600 = 83.3 % this is 16.7% short .
I paid about 7.8btc so I should get about 1.3 btc refund.
Now they will argue that at 600 I get say 4400 th which is 91.67% or about 8.33% short which is about a .65 btc refund.
Saving space
That sagging is a little bit worrysome. As you don't know if it might continue more. I wonder what the cause is as this is about the speed of batch 2 (the slower ones).
Anyways I hope they make it right. Please let us know what happens.
September 29, 2015, 07:49:57 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
sorry to hear this, but I thought that you got a couple.
is second similar to the first one?
yes both were able to do 4750, 4775 = 4625 but after a week burn in they sagged a bit.
I find that freq at 500 is better so frankly 500/600 = 83.3 % this is 16.7% short .
I paid about 7.8btc so I should get about 1.3 btc refund.
Now they will argue that at 600 I get say 4400 th which is 91.67% or about 8.33% short which is about a .65 btc refund.
September 29, 2015, 07:40:35 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
sorry to hear this, but I thought that you got a couple.
is second similar to the first one?
September 29, 2015, 07:23:19 PM
my miner came quickly, but it runs slowly.
i can not get past 4600 and errors are .1100
i can not get past 4600 and errors are .1100
I felt sure that the S7 was going to be a solid machine after the S5 performed so well. It's starting out a bit shaky!
September 29, 2015, 07:18:57 PM
I ordered on the first of september and still my unit hasnt shipped, is this normal?
I can't paste the email because of their correspondence contract/disclaimer, but in general terms there were a ton of large orders on batch one. I ordered a couple of weeks after they popped up online and then they sold out a couple of weeks later, which puts me in the middle. I am changing jobs the second week of October, so I asked them if there was any chance I would receive my order before then. I work from home now and won't be at my new job, so I wanted to work on the logistics.
I was told that my order may ship the first part of October since there are so many large orders ahead of me.
Ufo
Thank you for the information. Do you have the exact date of your order?
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