ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 152.

fr4nkthetank

legendary

Activity: 2294

Merit: 1182

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

Quote from: lanfeusst on December 14, 2015, 02:06:23 PM

Quote from: FlensGold on December 14, 2015, 01:56:56 PM

Hello,
I am thinking of overclocking my S7 B6 (4,05TH/s) a bit. Is there a special thread for OC of S7?
If not, what can you recommend? It runs at 41°C while hashing at a Frequency of 600.
Thank you and kind regards

You should overclock to a frequency where you get > 0.001 % AND < 0.005 % HW error. (between 0.001% and 0.005%)
This will allow you to get the best hashrate for your voltage.

I have a batch 8, I find its pretty picky. change fan speed and all goes to hell. hw goes up, sometimes i get x's for some chips. at 3600rpm I seem to get close to 4700ghs, with 0.002-0.005 hw error rate. So far, the way to go is: find a setting that works, and dont ever touch that thing again. temps are around 52-55c. Anybody has a batch 8 that can help out with settings ? I'd like to put fan speed back down to 35%, but then I get 4550-4600ghs with 62-66c temps.

Moria843

sr. member

Activity: 442

Merit: 250

Found Lost beach - quiet now

Bitmain has been down a long time. I hope the Chinese government hasn't shut them down. Anybody heard any news about why they're down?

RichBC

hero member

Activity: 588

Merit: 500

Quote from: ATCkit on December 14, 2015, 05:02:08 PM

Quote from: Biodom on December 14, 2015, 04:48:37 PM

Quote from: ATCkit on December 14, 2015, 03:43:28 PM

Just un-boxed and set up 2 S7 batch 8s. I have long data cables and I'd like to connect them to one controller to test that.

Dumb question (I'm blind today):

Where/how do I connect the fans from the second rig to the controller on the first rig?

philipma described the setup here:
https://bitcointalksearch.org/topic/m.12529952

Doh- after looking at the picture. I just realized the Batch 8 controllers don't have the extra sockets for running data and fan cables to a second or third rig. ( I still haven't got my Batch 1 controller back from Denver. Otherwise, i would have seen the obvious difference and not posted my silly question. )

A pain for you but very interesting. Is this perhaps an S5 Controiller with 2 fan connectors & 4 Hash Board connectors, or something new? Do you have a picture of the controller?

Rich

ATCkit

hero member

Activity: 786

Merit: 1000

Quote from: Biodom on December 14, 2015, 04:48:37 PM

Quote from: ATCkit on December 14, 2015, 03:43:28 PM

Just un-boxed and set up 2 S7 batch 8s. I have long data cables and I'd like to connect them to one controller to test that.

Dumb question (I'm blind today):

Where/how do I connect the fans from the second rig to the controller on the first rig?

philipma described the setup here:
https://bitcointalksearch.org/topic/m.12529952

Doh- after looking at the picture. I just realized the Batch 8 controllers don't have the extra sockets for running data and fan cables to a second or third rig. ( I still haven't got my Batch 1 controller back from Denver. Otherwise, i would have seen the obvious difference and not posted my silly question. )

Moria843

sr. member

Activity: 442

Merit: 250

Found Lost beach - quiet now

Quote from: RichBC on December 14, 2015, 04:45:48 PM

Quote from: nepaluz on December 14, 2015, 04:38:59 PM

S7 @ 3.1BTC shipping 5 days after payment recieved is fool's gold!
Shipping from stock at what was at the time a price cut smacks of a clearance sale. The significance of that clearance by bitmain may simply be undermining a competitor or clearing space for the next generation BM chip. Either way, with the network diff they have to recoup as much as possible from their stocks before they become worthless.

I think the price is more a reflection of how much BTC has risen in value, rather than any fire sale. S7 have some way to run yet. Even with the Difficulty rises we are seeing and the halving still the best value for money miner on the market at the moment.

Rich

It's not always fools gold if you consider other factors. I keep my miners in the basement and use them to heat the house in the winter. I estimate a heating cost savings of about $150/month which pays for most of the extra electric cost.

nepaluz

newbie

Activity: 22

Merit: 0

The price of S7 B8 would be a reflection on the price of BTC if the S7 sales were not from stock. And there is a difference between a fire sale and a clearance sale which I believe this is thus the fool's gold.

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: DonBit on December 14, 2015, 03:32:20 PM

Quote from: Biodom on December 14, 2015, 02:15:24 PM

Quote from: FlensGold on December 14, 2015, 01:56:56 PM

Hello,
I am thinking of overclocking my S7 B6 (4,05TH/s) a bit. Is there a special thread for OC of S7?
If not, what can you recommend? It runs at 41°C while hashing at a Frequency of 600.
Thank you and kind regards

It's not the temp that is more important, but The HW error.
I've got almost no error at 600 (less than 0.0001%),
so I overclocked it to 650: ~4.28-4.3 Th, 1160W, 0.0012% error
I noticed that fan never exceeds 4320; they probably capped it there.
675 and 700 mhz does not work (for my S7 B6)

Thanks for sharing this about B6 OC! I'm waiting for an additional PSU arrive and do my experiments.
What does it happen exactly when you set to 675 or 700? Do you get x's in the status? Doesn't hash at all? Sounds like is asking for more volts. Maybe feeding more power will make it.

no x's, but chips throttled back (speed was less than at 650) and error was high ~0.5%

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: ATCkit on December 14, 2015, 03:43:28 PM

Just un-boxed and set up 2 S7 batch 8s. I have long data cables and I'd like to connect them to one controller to test that.

Dumb question (I'm blind today):

Where/how do I connect the fans from the second rig to the controller on the first rig?

philipma described the setup here:
https://bitcointalksearch.org/topic/m.12529952

RichBC

hero member

Activity: 588

Merit: 500

Quote from: nepaluz on December 14, 2015, 04:38:59 PM

S7 @ 3.1BTC shipping 5 days after payment recieved is fool's gold!
Shipping from stock at what was at the time a price cut smacks of a clearance sale. The significance of that clearance by bitmain may simply be undermining a competitor or clearing space for the next generation BM chip. Either way, with the network diff they have to recoup as much as possible from their stocks before they become worthless.

I think the price is more a reflection of how much BTC has risen in value, rather than any fire sale. S7 have some way to run yet. Even with the Difficulty rises we are seeing and the halving still the best value for money miner on the market at the moment.

Rich

nepaluz

newbie

Activity: 22

Merit: 0

S7 @ 3.1BTC shipping 5 days after payment recieved is fool's gold!
Shipping from stock at what was at the time a price cut smacks of a clearance sale. The significance of that clearance by bitmain may simply be undermining a competitor or clearing space for the next generation BM chip. Either way, with the network diff they have to recoup as much as possible from their stocks before they become worthless.

Moria843

sr. member

Activity: 442

Merit: 250

Found Lost beach - quiet now

Haven't been tracking S7 price and wondering if buying at 3.1 BTC over the weekend was a bad idea. Did they go down to lower the price? Do they generally lower as the value of BTC goes up?

ATCkit

hero member

Activity: 786

Merit: 1000

Just un-boxed and set up 2 S7 batch 8s. I have long data cables and I'd like to connect them to one controller to test that.

Dumb question (I'm blind today):

Where/how do I connect the fans from the second rig to the controller on the first rig?

e46btc

full member

Activity: 157

Merit: 103

Guys any updates about December firmware? Maybe someone was seen Bitmain notes about this? What improvements? I do not dream about Official Release Notes

We know some info about Sep and Oct firmware but what about Dec?

vortexz

legendary

Activity: 1120

Merit: 1001

what is wrong with bitmaintech.com website ? Sad

it's been down for many hours.
I'm wondering if they started shipping the S7 B8 3.1 BTC from stock ?
I have an order placed on saturday.

DonBit

member

Activity: 69

Merit: 10

Quote from: Biodom on December 14, 2015, 02:15:24 PM

Quote from: FlensGold on December 14, 2015, 01:56:56 PM

Hello,
I am thinking of overclocking my S7 B6 (4,05TH/s) a bit. Is there a special thread for OC of S7?
If not, what can you recommend? It runs at 41°C while hashing at a Frequency of 600.
Thank you and kind regards

It's not the temp that is more important, but The HW error.
I've got almost no error at 600 (less than 0.0001%),
so I overclocked it to 650: ~4.28-4.3 Th, 1160W, 0.0012% error
I noticed that fan never exceeds 4320; they probably capped it there.
675 and 700 mhz does not work (for my S7 B6)

Thanks for sharing this about B6 OC! I'm waiting for an additional PSU arrive and do my experiments.
What does it happen exactly when you set to 675 or 700? Do you get x's in the status? Doesn't hash at all? Sounds like is asking for more volts. Maybe feeding more power will make it.

lanfeusst

full member

Activity: 190

Merit: 100

Quote from: FlensGold on December 14, 2015, 02:41:19 PM

Quote from: lanfeusst on December 14, 2015, 02:06:23 PM

Quote from: FlensGold on December 14, 2015, 01:56:56 PM

Hello,
I am thinking of overclocking my S7 B6 (4,05TH/s) a bit. Is there a special thread for OC of S7?
If not, what can you recommend? It runs at 41°C while hashing at a Frequency of 600.
Thank you and kind regards

You should overclock to a frequency where you get > 0.001 % AND < 0.005 % HW error. (between 0.001% and 0.005%)
This will allow you to get the best hashrate for your voltage.

Wow, it seems I should underclock them. My S7 have around 0.0065% with default settings :-(

It should be fine, just don't overclock it

ColderThanIce

sr. member

Activity: 373

Merit: 252

Quote from: FlensGold on December 14, 2015, 02:41:19 PM

Wow, it seems I should underclock them. My S7 have around 0.0065% with default settings :-(

What kind of PSU are you using? I find that with lower quality PSU's you get higher HW error rates (voltages might not be exact, in my experience that's led to some problems with miners).

I'm running an S7 right now and its HW error rate is around 0.0004% after 3 days of running steady.

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: FlensGold on December 14, 2015, 02:41:19 PM

Quote from: lanfeusst on December 14, 2015, 02:06:23 PM

Quote from: FlensGold on December 14, 2015, 01:56:56 PM

Hello,
I am thinking of overclocking my S7 B6 (4,05TH/s) a bit. Is there a special thread for OC of S7?
If not, what can you recommend? It runs at 41°C while hashing at a Frequency of 600.
Thank you and kind regards

You should overclock to a frequency where you get > 0.001 % AND < 0.005 % HW error. (between 0.001% and 0.005%)
This will allow you to get the best hashrate for your voltage.

Wow, it seems I should underclock them. My S7 have around 0.0065% with default settings :-(

just try to reload the cgminer by going to "advanced", not changing anything, then clicking "save and apply".
sometimes they latch on a better "state" and sometimes on "worse"

FlensGold

legendary

Activity: 1405

Merit: 1001

Quote from: lanfeusst on December 14, 2015, 02:06:23 PM

Quote from: FlensGold on December 14, 2015, 01:56:56 PM

Hello,
I am thinking of overclocking my S7 B6 (4,05TH/s) a bit. Is there a special thread for OC of S7?
If not, what can you recommend? It runs at 41°C while hashing at a Frequency of 600.
Thank you and kind regards

You should overclock to a frequency where you get > 0.001 % AND < 0.005 % HW error. (between 0.001% and 0.005%)
This will allow you to get the best hashrate for your voltage.

Wow, it seems I should underclock them. My S7 have around 0.0065% with default settings :-(

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: Exoskeleton on December 14, 2015, 01:23:18 PM

Quote from: valkir on December 14, 2015, 01:13:55 PM

Quote from: Master One on December 14, 2015, 01:09:04 PM

Just out of interest, why bother with the EVGA and not just take the power supply offered by Bitmaintech?

EVGA can be plug into 120v, the bitmain psu cannot. Some of us dont have any 240v available. Wink

Yep, Believe it or not in the United States 240V is pretty hard to come by. Were talking dryer and washing machine plugs only. Maybe the oven if you want to go that far. I had the oven socket wired up to a PDU and wired up to miners a year ago but the other people in my house couldn't handle switching out to use the oven and all the fuss so we took that option away. If they only knew that the extra 50A/10,000Kwh could have been so much better for our mining over the last year...

Try explaining why you need the oven hooked up 95% of the time for mining/noise pollution to your roommates. I even offered to pay 100% of the electric bill. Roll Eyes

1. wifie looked at me kind of funny when I suggested that i will use the 240V dryer outlet. making major electrical updates are counterproductive with high cost and little benefit in everything else.
2. most people got evgas from S3-S5 fun run
3. the cost of evga 1300 is ~$125 on ebay or here
4. evga has awesome reviews, very stable power
5. very little noise from EVGA

Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 152. (Read 527805 times)