ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 169.

hawkfish007

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Quote from: methodlimp on December 05, 2015, 06:41:41 PM

Hi guys, I'm new to the forum but I've been mining since june (I currently have 5 S4's, 5 X3's - they are garbage, 3 batch 7 S7's, and 3 batch 8 S7's on order).

I have 3 $150 coupons I'm looking to get rid of, for batch 8. Since they do me no good (and since I apparently can't combine them to buy another batch 8 unit), I'm looking to get rid of them. I'm willing to take whatever you're willing to offer. They expire on the 31st tho, FYI.

Let me know if anyone is interested.

I am looking for 1 coupon. 0.1 BTC/coupon?

mindtrip

legendary

Activity: 1167

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ill offer you 0.09 BTC for 1 coupon

methodlimp

newbie

Activity: 25

Merit: 0

Hi guys, I'm new to the forum but I've been mining since june (I currently have 5 S4's, 5 X3's - they are garbage, 3 batch 7 S7's, and 3 batch 8 S7's on order).

I have 3 $150 coupons I'm looking to get rid of, for batch 8. Since they do me no good (and since I apparently can't combine them to buy another batch 8 unit), I'm looking to get rid of them. I'm willing to take whatever you're willing to offer. They expire on the 31st tho, FYI.

Let me know if anyone is interested.

mindtrip

legendary

Activity: 1167

Merit: 1009

So i have a batch 1 S7 that ever since performing the FW update form the site wont hash seems like after a hard reboot and leaving it for a few hours it starts to hash but if I ever power it down the problem starts up again. multiple reboots and nothing the main screen is dead See screen shot

I have also tried to login via SSH with default root/root and i get access denied so I can't even poke around inside to try and review the config files

Anyone had any issues like this or can offer advice on how to get in with SSH I would appreciate your help

adaseb

legendary

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The best miners were the S2, S3 and the Sp20.

Everything else was garbage pretty much.

fr4nkthetank

legendary

Activity: 2294

Merit: 1182

Now the money is free, and so the people will be

About the quality discussion on here, s3, s3+ was really good - and then you got the s5 with the plastic sides....I mean....you should of seen the look of deception on my face. I knew it was like that, but still. At least s7 is metal guys, could be worse

Biodom

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Activity: 3892

Merit: 4331

Quote from: yslyung on December 05, 2015, 03:24:23 PM

rich its batch 1,3,5,7

B2 and B4 are also 162 chip systems, only B6 and B8 are 135 chip systems so far.

yslyung

legendary

Activity: 1500

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Mine Mine Mine

rich its batch 1,3,5,7

RichBC

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Quote from: VirosaGITS on December 05, 2015, 03:05:04 PM

Pretty sure the S7 is a string design, which apparently lead to not being able to set the voltage with software. You would need a buck step down instead.

Not sure whats the big deal with their latest design schemes. Considering how much profit they make per unit, you'd think they could afford few extra bucks per boards manufactured to allow Volt control.

It's more complicated than that and it's like noone is reading my post from further up the page? So I'll repeat it here.

Quote from: RichBC on December 05, 2015, 02:32:07 AM

OK let's not get carried away here. We know that Batches 1 to 5 and 7, the 162 chip Systems, are a straight string design and are not voltage adjustable except by varying the Supply Voltage. Any Voltage numbers in the /config/cgminer.conf are merely a leftover from previous miners that were adjustable and will do nothing if changed.

The Miners that might be adjustable are the 135 Chip Batch 6 & 8. However although we suspect there might be a Buck Controller this is not yet confirmed. If there is one then it might have a fixed voltage like S1 & S3. Or if we get very lucky it might be software voltage adjustable. Bitmain might make this directly adjustable from within the GUI like S4 or it may need the cgminer.conf to be edited.

All of these questions will be easy to answer when we can get a picture of the Batch 6/8 Hash Board and if there is a software controllable Buck Converter people can then explore play with the cgminer.conf setting.

Rich

VirosaGITS

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Quote from: aarons6 on December 05, 2015, 01:59:26 PM

Quote from: hodedowe on December 04, 2015, 06:24:03 PM

Quote from: RichBC on December 04, 2015, 05:44:51 PM

Quote from: Cyper_BLC on December 04, 2015, 05:17:09 PM

if voltage controller be in new boards. i think we can not control them

because pic12f1822 job is simple; adjust voltage at boot and set working voltage to buck controller ic. this is chip protection for them.

If there is voltage control.... a way will be found to adjust it.

Rich

There's a voltage listing in /config/cgminer.conf on S7's. As someone mentioned earlier, the "factory defaults" are not the ones all miners come with though. Factory listing with 700 mhz is 0725, the one in some config files you'll see at receipt is 0706.

It looks like this:

"bitmain-voltage" : "0725"

hate to break some bad news, but they put that in the s5 cgminer.conf too.. and the s5 definitely cant be voltage adjusted that way.

Pretty sure the S7 is a string design, which apparently lead to not being able to set the voltage with software. You would need a buck step down instead.

Not sure whats the big deal with their latest design schemes. Considering how much profit they make per unit, you'd think they could afford few extra bucks per boards manufactured to allow Volt control.

aarons6

legendary

Activity: 1736

Merit: 1006

Quote from: hodedowe on December 04, 2015, 06:24:03 PM

Quote from: RichBC on December 04, 2015, 05:44:51 PM

Quote from: Cyper_BLC on December 04, 2015, 05:17:09 PM

if voltage controller be in new boards. i think we can not control them

because pic12f1822 job is simple; adjust voltage at boot and set working voltage to buck controller ic. this is chip protection for them.

If there is voltage control.... a way will be found to adjust it.

Rich

There's a voltage listing in /config/cgminer.conf on S7's. As someone mentioned earlier, the "factory defaults" are not the ones all miners come with though. Factory listing with 700 mhz is 0725, the one in some config files you'll see at receipt is 0706.

It looks like this:

"bitmain-voltage" : "0725"

hate to break some bad news, but they put that in the s5 cgminer.conf too.. and the s5 definitely cant be voltage adjusted that way.

bbOOmm

sr. member

Activity: 277

Merit: 250

I'm looking to purchase ~~~one~~~ more S7 B3 to fill out a rack shelf with the same model & batch number ( makes maintenance,upgrading etc, simple when you keep the same of anything all together)

Does anyone have a S7 B3 that is giving them some trouble with heatsinks, bad fan etc... or you just dont like the B3.... Let me know, I'm looking to purchase if the price is right.

Shipping probably would be required since .... hardly anyone in Wisconsin mines even though they make good heaters in winter.

Thanks

Grin

wolfen

hero member

Activity: 770

Merit: 523

Cycled power on my s7 and the front fan started twitching . Had to spin it by hand to get it to go.
Probably will replace soon. At least these have two fans instead of one like the s5.
It is at the datacenter so I was lucky I had to cycle in person.
I'll have to cycle again when I go there in the next few days to see if it repeats.
Keep an eye out.

Mr.paul

newbie

Activity: 21

Merit: 0

Quote from: Prelude on December 04, 2015, 12:33:58 PM

Quote from: aurel57 on December 04, 2015, 11:55:47 AM

Quote from: Prelude on December 04, 2015, 12:11:06 AM

Quote from: Mr.paul on December 03, 2015, 10:10:36 PM

hi guys ... anyone get batch 1 refund information ? Cry

when oct still get a email reply will get soon...
but now is dec still no any respond from bitmain Sad

Don't hold your breath, you won't get it. Look into the S4 psu "compensation" promises from Bitmain.

Yes it sucks....nothing but a broken promise

Par for the course, unfortunately. I wish they'd just outright say "Too bad, it's late, you're SOL. Thank you for your business." instead of making promises they know they won't keep.

Big company can't do a little promise.. just know keep selling product.

jadefalke

legendary

Activity: 1456

Merit: 1014

honestly i don't get why you guys are buying them anyhow, with that high price and diff jumps like crazy is even with low elec. Price is time until you ROI close to 1 Year if at all...

vortexz

legendary

Activity: 1120

Merit: 1001

I agree with you, the quality of the S7 is extremely poor, it's not the quality of a 2.000 $ hardware.Anything these days that you pay 2.000 $ for is top-notch, state of the art.
S7 is a piece of sh*t,extremely bad quality, even the S3 which was 0.6 BTC with shipping included had much better build quality.

SLEI

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Quote from: VirosaGITS on December 05, 2015, 03:27:37 AM

Quote from: opentoe on December 05, 2015, 02:51:37 AM

Quote from: SLEI on December 02, 2015, 07:31:38 PM

I got my batch 7 online yesterday and the noise is horrible and I used to think S5 is noisy.
Fans run over 4000rpm and blades are about 50C, air is traveling too fast, screams and resonates badly.
3 x DPS-600 powers take 1400W from wall, I tested power draw upto 1600W.

Customs took 1BTC for sale tax but I have "free" electrics as garage is heated with S7 so I maybe ROI some day.

What did you really expect? One S5 with one jet blaster fan was horrible noise pollution. Then, an S7 with two of them running. The temps aren't even the "real" temps. It's just a temp sensor on the board somewhere. I would always add 10 degrees to the temp shown.

50C, thats very good. You have some leeway here. Air is too fast, yes indeed it make a lot of noise at full speed;

So why are you not reducing fan speed? Tongue

2 Fan is actually quieter than 2 fan because the air flow for the same noise is lower.

I was expecting evolution, Bittmaintech have made these machines over two years.
If You put two same size fans in a tube suction fan should bee bigger, flow rate is reduced if it isn't. Fans in S7 have the static fins which restric flow at exit, but at inlet side they reduce turbulence and make inlet air pressure higher. Exit fins are useless and make only noise. If You put hand near exit, machine don't make so much noise.

If you pay almost 2000$ of a machine you shouldn't need to open it first and check if parts have fallen of.
Better thermal epoxy needed or some quality control maybe?

2000$ miner shouldn't overheat and burn if it lose internet.

Not GPUs hanging from wires but still not yet very matured products.

VirosaGITS

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Quote from: opentoe on December 05, 2015, 02:51:37 AM

Quote from: SLEI on December 02, 2015, 07:31:38 PM

I got my batch 7 online yesterday and the noise is horrible and I used to think S5 is noisy.
Fans run over 4000rpm and blades are about 50C, air is traveling too fast, screams and resonates badly.
3 x DPS-600 powers take 1400W from wall, I tested power draw upto 1600W.

Customs took 1BTC for sale tax but I have "free" electrics as garage is heated with S7 so I maybe ROI some day.

What did you really expect? One S5 with one jet blaster fan was horrible noise pollution. Then, an S7 with two of them running. The temps aren't even the "real" temps. It's just a temp sensor on the board somewhere. I would always add 10 degrees to the temp shown.

50C, thats very good. You have some leeway here. Air is too fast, yes indeed it make a lot of noise at full speed;

So why are you not reducing fan speed? Tongue

2 Fan is actually quieter than 2 fan because the air flow for the same noise is lower.

opentoe

legendary

Activity: 1274

Merit: 1000

Personal text my ass....

Quote from: SLEI on December 02, 2015, 07:31:38 PM

I got my batch 7 online yesterday and the noise is horrible and I used to think S5 is noisy.
Fans run over 4000rpm and blades are about 50C, air is traveling too fast, screams and resonates badly.
3 x DPS-600 powers take 1400W from wall, I tested power draw upto 1600W.

Customs took 1BTC for sale tax but I have "free" electrics as garage is heated with S7 so I maybe ROI some day.

What did you really expect? One S5 with one jet blaster fan was horrible noise pollution. Then, an S7 with two of them running. The temps aren't even the "real" temps. It's just a temp sensor on the board somewhere. I would always add 10 degrees to the temp shown.

opentoe

legendary

Activity: 1274

Merit: 1000

Personal text my ass....

Quote from: FlensGold on December 02, 2015, 10:11:06 AM

Are there any suggestions for replacement fans? Just in case one is broken or they are too loud?
Greetings,
me

I have several brand new S7 fans. $25. US. PM if interested.

Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 169. (Read 528055 times)