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Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 220. (Read 527809 times)

legendary
Activity: 1260
Merit: 1009
Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

I'm tempted, but I always jump a day too early...

Very tempted.

At what USD/BTC Exchange rate will Bitmain change their pricing back to dollars?

Guesses?
legendary
Activity: 3892
Merit: 4331
Ok, I had possible short internet blackout or disturbance (was not at home).
came back to observe the following:

One batch 2 miner (9/15 system) fully recovered by itself.
Second batch 2 miner (10/23 system) did not recover, both fans were rotating, but not full tilt, air was coming out hot and miner was making a solid noise (not periodic, but continuous beeping); it was obviously not mining and did not recover the internet connection. I switched it off, let it sit for 5-10min with an external fan blowing air toward intake. Once air was coming out ~ambient, I switched the PSU back on and miner recovered internet and is hashing.

Conclusions:
in this batch 2 (updated to October system), fans were NOT rotating at high speed after internet loss and miner did not recover by itself upon internet restoration, but miner with 9/15 system did (the opposite of what you would be expecting).
The good news is that it did not burn itself either.
legendary
Activity: 1218
Merit: 1003
Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

My last two S7
from  BATCH 5 × 2 = 3696.24 USD  with shipping

from  BATCH 6 × 2 = 2751.53 USD  with shipping

difference in price 944,71 USD        472 USD per miner
difference in hashrate   1620 GH/s  810 GH/s per miner


The higher  the  BTC price is , the higher is  the amount of USD on  invoice. Then more I have to pay 20% VAT.

  So I prefer to buy  from USD , if the  BTC  price is low and sell BTC, if the price is high.
donator
Activity: 4760
Merit: 4323
Leading Crypto Sports Betting & Casino Platform
Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

I'm tempted, but I always jump a day too early...
sr. member
Activity: 805
Merit: 250
Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

legendary
Activity: 1022
Merit: 1003
Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
I have some batch 3, none have 24hr average over 4.86, most are in the 4.7 range and a couple are 4.60  24 hr average.

Troubleshooting I was thinking about starting to check input power level. 

Anything else?

while under full load check your dc input levels at all nine jacks on the blades.
all nine must all be under load while you test.
use a dmm meter
if they all read 11.95 volts  to 12.1 volts at every one

try a software boot.

if you still get bad numbers.  check your fan speeds and temps.

I have yet to see anyone show all nine blades slots under full load test at 11.94 or higher volts each one of them and have bad numbers.

every photo I have seen showing good volts did not show  that all nine jacks were plugged in and at  proper volts.
legendary
Activity: 2294
Merit: 1182
Now the money is free, and so the people will be
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
I just checked my hashrates one s7 was down to 4.5
Just hit save and apply on configuration page without changing text to restart cgminer and it is back up to 4.8
Nicer to restart cgminer than to reboot.

I rarely look at my S7.  It's not going to be constantly hashing at 4.86, I know that, sometimes it goes up, sometimes it drops.  I think people put way too much emphasis on a constant hashing speed when it is always grabbing new shares at different difficulties.  I guess if I set the min diff it would be different, but that's the whole point of stratum and I'll let it work the way it was designed.

your power supplies are critical for it to maintain hashrates

the one below uses an evga 1600 t2

with 240 volts

http://www.newegg.com/Product/Product.aspx?Item=9SIA24G31E0501&cm_re=evga_1600-_-17-438-041-_-Product
results are better then the s-7 is rated
full member
Activity: 180
Merit: 100
I just checked my hashrates one s7 was down to 4.5
Just hit save and apply on configuration page without changing text to restart cgminer and it is back up to 4.8
Nicer to restart cgminer than to reboot.

I rarely look at my S7.  It's not going to be constantly hashing at 4.86, I know that, sometimes it goes up, sometimes it drops.  I think people put way too much emphasis on a constant hashing speed when it is always grabbing new shares at different difficulties.  I guess if I set the min diff it would be different, but that's the whole point of stratum and I'll let it work the way it was designed.
full member
Activity: 180
Merit: 100
Just curious, is anyone biting on batch 6 or are you waiting to see if batch 7 is any improvement.  I would hate to submit and buy a batch 6 and then see batch 7 with 4.86TH again...
Would buy a batch 6 if I had any funds left.
It's just a bit slower and probably pretty stable.
You would have no problem selling a batch 6.

Yea, you're probably right, as soon as I get my 4 btc mined back up I'll probably blow it and replace my older miners with it.
Older miners going for a fortune on eBay.
Wanted to get a pair of s3's to warm my garage this winter but too expensive, can't justify price.
Have a pair in my basement.
They are my museum miners.
Have a 7970 graphics card, gridseed orb, gridseed blade, s3,s3+,dead s5 in the museum.
Figured I would keep one of each.
Never did s1,s2,s4. Went straight from gridseed blade to s3.



Ah, I have my failed upgraded S1 sitting on the floor in my office...I must've screwed something up when trying to upgrade the hash boards on it and it never really fired up properly so it's just a door stop now.  Ever other device I've had, I've sold off...8 S3's all through ebay, 3 S5's on ebay...never had a desire to hold onto the stuff since it's part of my ROI.  Heck, my S5's I had for almost 9 months and still sold them for $360 each which isn't too bad.

And once I get my second S7, I'll sell off my last S5 and S1 that I upgraded and OC'd to 500 GH which is a little powerhouse, never had a problem with that guy.  But the efficiency of the S7's is something I cannot pass up.  Then we'll see what happens this summer.  Hopefully I'll be able to keep rolling with the halving.
hero member
Activity: 770
Merit: 523
I just checked my hashrates one s7 was down to 4.5
Just hit save and apply on configuration page without changing text to restart cgminer and it is back up to 4.8
Nicer to restart cgminer than to reboot.
hero member
Activity: 770
Merit: 523
Just curious, is anyone biting on batch 6 or are you waiting to see if batch 7 is any improvement.  I would hate to submit and buy a batch 6 and then see batch 7 with 4.86TH again...
Would buy a batch 6 if I had any funds left.
It's just a bit slower and probably pretty stable.
You would have no problem selling a batch 6.

Yea, you're probably right, as soon as I get my 4 btc mined back up I'll probably blow it and replace my older miners with it.
Older miners going for a fortune on eBay.
Wanted to get a pair of s3's to warm my garage this winter but too expensive, can't justify price.
Have a pair in my basement.
They are my museum miners.
Have a 7970 graphics card, gridseed orb, gridseed blade, s3,s3+,dead s5 in the museum.
Figured I would keep one of each.
Never did s1,s2,s4. Went straight from gridseed blade to s3.

hero member
Activity: 770
Merit: 523


Holy crap, you're running that pretty hot.  My temps never get over 60C.
I only hit 60c when one of my fans punted.
It's like the fan voltage is stuck low.
Fans are probably fine since they are both low.
Everything else looks good.
Maybe a new controller board would fix it.
full member
Activity: 180
Merit: 100
Just curious, is anyone biting on batch 6 or are you waiting to see if batch 7 is any improvement.  I would hate to submit and buy a batch 6 and then see batch 7 with 4.86TH again...
Would buy a batch 6 if I had any funds left.
It's just a bit slower and probably pretty stable.
You would have no problem selling a batch 6.

Yea, you're probably right, as soon as I get my 4 btc mined back up I'll probably blow it and replace my older miners with it.
hero member
Activity: 770
Merit: 523
Just curious, is anyone biting on batch 6 or are you waiting to see if batch 7 is any improvement.  I would hate to submit and buy a batch 6 and then see batch 7 with 4.86TH again...
Would buy a batch 6 if I had any funds left.
It's just a bit slower and probably pretty stable.
You would have no problem selling a batch 6.
Plus I'm out of power on my racks.
full member
Activity: 180
Merit: 100


Holy crap, you're running that pretty hot.  My temps never get over 60C.
full member
Activity: 180
Merit: 100
Just curious, is anyone biting on batch 6 or are you waiting to see if batch 7 is any improvement.  I would hate to submit and buy a batch 6 and then see batch 7 with 4.86TH again...
sr. member
Activity: 751
Merit: 253
I have some batch 3, none have 24hr average over 4.86, most are in the 4.7 range and a couple are 4.60  24 hr average.

Troubleshooting I was thinking about starting to check input power level. 

Anything else?
sr. member
Activity: 472
Merit: 250
Is there any way (in the software) to determine the voltage being supplied to the hashing boards?  

good question don't know.  I use a dmm   and test all 9 pcie jacks.

I would think if it was in software you would get 1 reading for each blade.

that is okay if your hash rate is good and all 9 jacks are giving 11.9 or more volts.

I have found that testing each pci jack while every jack is under load is the only way to be sure you don't have a psu issue.

Really test every PCIE Jack?  On a single-rail PSU I would think as long as all the connections are solid you should see the same voltage on all. 

Now if you are using a multi-rail PSU, then yeah you have to test every lead.  But then again if it were me I'd toss a multi-rail PSU anyway as I played that game back in the GPU days and load-balancing was no fun when you are mixing/matching rails.  Manufacturers often hide the rail configurations so you are left guessing, and normally dedicate one rail to the mobo connector so that becomes worthless!

Long story short:  I love my 1300W 108A@12V PSUs.  Worth every penny!
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