ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[marvykkio]

I am getting a little depressed.  I received 5 miners so far and running all of them at the standard freq of 600.  My ave gh/s for these are 4744, 4738, 4513, 4480 and 4276.  They are having me do some troubleshooting by changing out power supplies (I have all Platinum) and then test each card individually.  I ordered 4860gh/s machines!  Very frustrating!!!  

This is what I asked for when they put S7 4.66 th / s,
a person orders s7 4.86, 4.66 and they send, for me this is a strategy that will backfire on us.

[VirosaGITS]

So a strong correlation between the Hash Rate & the Error Rate, but seems to be having a greater effect on the Hash than I would expect? I guess No 1 does not like the cold.  Would be instructive to drop the Frequency to 575MHz and see what that does to the Hash & Error Rate.

Rich

I guess i'll have to further my theory where its simply the volt control not being equal. It would be interesting to see whats the core voltage on the S7 of various performance.

If it has poor volt control, this would result in not having a proper amount of current fed to the chip, it would explain why some miners show more HWE% and much less hashrate even if it is not proportional.

This seem like the same thing/issue with when you try to clock a S5 to 400hz+, the hashrate drop even though the HWE% does not go up by that much.

If you could raise the voltage of those S7 by a bit, the problem would probably go away, though maybe at worse efficiency.

[vortexz]

why does the BTC price on bitmaintech.com is so off ? it's rated at 236.52 USD while price got up to 244.75 $ right now on btc-e.com
I wanted to buy 2x s7 but the price is way lower than reality.what is going on ?

[valkir]

Because chinese are in holiday.

[vortexz]

when do they come back from holiday ? I want to buy 2x S7 from them

[ATCkit]

when do they come back from holiday ? I want to buy 2x S7 from them

This post is a very good indicator:

https://bitcointalk.org/index.php?topic=1165628.msg12616869#msg12616869

[Biodom]

Because chinese are in holiday.

one would think that a simple program can take care of this, no personnel presence needed.

[Chris_Sabian]

I would suggest waiting since Bitmain has still not shipped some of the orders from early September yet.  You don't want to have Bitmain sitting around 1-2months before they ship your miner.  This is just lost time and mining earnings for you.

[charles2k]

600MHz is the maximum frequency?
I have one cold place, where is always between 0-10C only . Is any chance to overclock?

[TracerX]

Because chinese are in holiday.

one would think that a simple program can take care of this, no personnel presence needed.

That is weird.  I suppose they manually update the price to keep wild fluctuations from breaking their sales numbers.

[RichBC]

600MHz is the maximum frequency?
I have one cold place, where is always between 0-10C only . Is any chance to overclock?

If the HW Error rate is zero / low at 600MHz, and you are not concerned about Warranty then probably yes. The BM1385 Data Sheet suggests that 675MHz should be possible with 12V. However as they have had to de-rate some units to 575MHz it seems that for some reason they are not meeting spec in the S7 so I suspect they may not go that high? However only one way to find out. Would take it up one step at a time and carefully monitor the temperatures. 

Rich

[HerbPean]

600MHz is the maximum frequency?
I have one cold place, where is always between 0-10C only . Is any chance to overclock?

If the HW Error rate is zero / low at 600MHz, and you are not concerned about Warranty then probably yes. The BM1385 Data Sheet suggests that 675MHz should be possible with 12V. However as they have had to de-rate some units to 575MHz it seems that for some reason they are not meeting spec in the S7 so I suspect they may not go that high? However only one way to find out. Would take it up one step at a time and carefully monitor the temperatures. 

Rich

Yeah it's like one of my S3 not able to run at 441 (droping at 415-420 over a long period of time) ... and the other one runs at 504 for over a year and is stable like a rock

[Xian01]

[majestymage]

interesting to see that they also frozen the BTC price at the level from ~1 week ago in the s-7 buying page. you got to love that 

[edonkey]

interesting to see that they also frozen the BTC price at the level from ~1 week ago in the s-7 buying page. you got to love that 

I guess they have to change that manually, and no one is there to do it

[torepia]

Gah I regret it so bad! ^^ Could have had 66 btc instead of an order of 6 broken units :/
66 BTC is my ROI target, including VAT , price of btc when I ordered etc..

[majestymage]

interesting to see that they also frozen the BTC price at the level from ~1 week ago in the s-7 buying page. you got to love that 

I guess they have to change that manually, and no one is there to do it

you really really think so or just trolling?

[edonkey]

interesting to see that they also frozen the BTC price at the level from ~1 week ago in the s-7 buying page. you got to love that 

I guess they have to change that manually, and no one is there to do it

you really really think so or just trolling?

I was half joking.

But if the price stays the same until the company comes back from vacation, then yeah, I believe that it must be a manual process.

For all I know they might need managerial approval for any material price change.

[sloopy]

interesting to see that they also frozen the BTC price at the level from ~1 week ago in the s-7 buying page. you got to love that 

I guess they have to change that manually, and no one is there to do it

you really really think so or just trolling?

I was half joking.

But if the price stays the same until the company comes back from vacation, then yeah, I believe that it must be a manual process.

For all I know they might need managerial approval for any material price change.

It does seem they do need managerial approval for most things.
But other than my bit of whining regarding other Bitmain topics, I am pretty much done with complaining about the lack of an S7 in my possession, which is pretty much what this thread is so far. Well, except the few who have no issues, and the people who have low hashing issues.

Almost humorous to read the first 50, 60, 90 pages of the other 'new product" threads.
There are some eerie coincidences.

Hell, most should have their units within the next couple of weeks and the thread will be more about success and failure and how we as individuals view each unless the scenario is painfully obvious.
I hope everyone's package arrives soon and no one has significant trouble.
IF one of us does let's make it a teaching session so we all know what to do.

Here, a toast to success.

 

[wolfen]

I think zoomhash is offering a USA warranty built into the price