ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 171.

aurel57

legendary

Activity: 1232

Merit: 1000

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

Prelude

legendary

Activity: 1596

Merit: 1000

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.

Mr.paul

newbie

Activity: 21

Merit: 0

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

fr4nkthetank

legendary

Activity: 2294

Merit: 1182

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

Dear Santa Clau...hrr..Bitmaintech. All I want for christmas is my batch 8, if it would get here in time, I would be so happy. Thanks, and happy new year.

SLEI

member

Activity: 84

Merit: 10

I wonder if I should make better wires for the batch 7 miner, I have 4mm2 wires about 40cm/16" coming from DPS-600s and PCI-e connectors with 4" thin wires soldered to cut off cheapo molex to PCI-e wires?
Voltage is 12.14V at miner end running and 12.5V without load.

notlist3d

legendary

Activity: 1456

Merit: 1000

Quote from: dmwardjr on December 03, 2015, 09:05:39 PM

Quote from: goxed on December 03, 2015, 07:02:33 AM

I believe I'm doing what you are doing to inspect the rigs from now on with future batches. Especially, after reading the WARNING here in the photo you provided.

Thanks for sharing...

Interesting for sure. I like that they gave customer permission to open it and check. That is much better then the don't touch policy.

Maybe they are changing for the better on warranty... or maybe to many were falling off. Makes me wonder on number for them to send that letter with it.

dmwardjr

legendary

Activity: 1302

Merit: 1318

Technical Analyst/Trader

Quote from: goxed on December 03, 2015, 07:02:33 AM

I believe I'm doing what you are doing to inspect the rigs from now on with future batches. Especially, after reading the WARNING here in the photo you provided.

Thanks for sharing...

VirosaGITS

legendary

Activity: 1302

Merit: 1068

Quote from: adaseb on December 03, 2015, 05:59:39 PM

I don't think they will reduce the price at all. If you bought this miner back in Sept when the diff was around 60 bill and price was $220, you are pretty much at the same ROI period now then before. Actually a slightly better ROI since price is > then diff.

Most calculated 7 months ROI, so in 4-5 months these machines should be completely paid off. It was a great investment that paid off. Pretty much any miner bought in 2015 was a great investment.

Yeah, at least, unless the price crash hard.

I'm still irritated i could not get one of those S7 when the BTC crashed from 400 to 300 super fast. Bitmain had the lesser units 4ths~ locked at 4btc, so they dropped at 1200$USD equivalent.

That would of been a nice grab.

adaseb

legendary

Activity: 3808

Merit: 1723

I don't think they will reduce the price at all. If you bought this miner back in Sept when the diff was around 60 bill and price was $220, you are pretty much at the same ROI period now then before. Actually a slightly better ROI since price is > then diff.

Most calculated 7 months ROI, so in 4-5 months these machines should be completely paid off. It was a great investment that paid off. Pretty much any miner bought in 2015 was a great investment.

mindtrip

legendary

Activity: 1167

Merit: 1009

Quote from: micairvas on December 03, 2015, 04:51:33 AM

One question guys. I Planing to buy Antminer S7 - batch8. I dont know why is this batch overclocked on 700m and hiting "only" 4.7Ths? Previous batchs hit this hashrate with only 600m-625m. Is this some bad batch or what, I suppose b8 unit will heat lot more than previous.

Look at the number of chips it is less on batch 8 from batch 7 and previous batches

B7 162 @ 625mhz
B8 135 @ 700mhz

what I don't get is how they claim the same power efficency

RichBC

hero member

Activity: 588

Merit: 500

Quote from: clgrissom3 on December 03, 2015, 04:08:59 PM

Quote from: RichBC on December 03, 2015, 03:00:26 PM

Quote from: jfbbtc on December 03, 2015, 02:50:15 PM

After the reset it was set at 700. None of the frequencies were marked as default. JB

Well that is interesting there has always in my experince been a frequency that has been marked as default, will be interesting to see what other people have? Good news is that if you have a Batch 6 that has a low HW error rate at 700MHz then that is vey nice.

Rich

I have 4 Batch 1's and none of them have a default frequency marked. They all came set at 600 and they all perform well at ~4820-4860 with 2 at HW ~0.0008% and 2 at HW ~0.0050%.

Well in that case looks like Bitmain changed the norm of having a Frequency marked as default, but looks like it is set to a frequency when delivered & does default to one when reset? Perhaps not surprising when you look at the number of flavours we have had so far? Will be interesting to hear if this is the case for all Batches and the upgrades to the firmware?

Rich

clgrissom3

legendary

Activity: 1736

Merit: 1032

Carl, aka Sonny :)

Quote from: RichBC on December 03, 2015, 03:00:26 PM

Quote from: jfbbtc on December 03, 2015, 02:50:15 PM

After the reset it was set at 700. None of the frequencies were marked as default. JB

Well that is interesting there has always in my experince been a frequency that has been marked as default, will be interesting to see what other people have? Good news is that if you have a Batch 6 that has a low HW error rate at 700MHz then that is vey nice.

Rich

I have 4 Batch 1's and none of them have a default frequency marked. They all came set at 600 and they all perform well at ~4820-4860 with 2 at HW ~0.0008% and 2 at HW ~0.0050%.

RichBC

hero member

Activity: 588

Merit: 500

Quote from: jfbbtc on December 03, 2015, 02:50:15 PM

After the reset it was set at 700. None of the frequencies were marked as default. JB

Well that is interesting there has always in my experince been a frequency that has been marked as default, will be interesting to see what other people have? Good news is that if you have a Batch 6 that has a low HW error rate at 700MHz then that is vey nice.

Rich

jfbbtc

newbie

Activity: 6

Merit: 0

After the reset it was set at 700. None of the frequencies were marked as default. JB

RichBC

hero member

Activity: 588

Merit: 500

Quote from: jfbbtc on December 03, 2015, 01:37:39 PM

Hello all, I have a batch 6 machine which I found necessary to hard reset (don't ask). Prior to that it had been Hashing along at 4.03 as expected with no problems. After the reset I watched it visually until the light and sound show indicated it was hashing ok. When I went to the computer to look I found it was hashing at 4.7 Terahashes/sec, temps were ok, error rate 0.0001. The freq was 700. Do I have a batch 8 in disguise? Could it have failed some batch 8 quality check and just had the freq turned down to 600 rather than loading software with default 600? Anyone else with a batch 6 had this experience? J. Balsley

So when you go to Miner Configuration - Advanced Settings. What Frequency is it set to and what is shown as the Default Frequency?

Rich

jfbbtc

newbie

Activity: 6

Merit: 0

Hello all, I have a batch 6 machine which I found necessary to hard reset (don't ask). Prior to that it had been Hashing along at 4.03 as expected with no problems. After the reset I watched it visually until the light and sound show indicated it was hashing ok. When I went to the computer to look I found it was hashing at 4.7 Terahashes/sec, temps were ok, error rate 0.0001. The freq was 700. Do I have a batch 8 in disguise? Could it have failed some batch 8 quality check and just had the freq turned down to 600 rather than loading software with default 600? Anyone else with a batch 6 had this experience? J. Balsley

goxed

legendary

Activity: 1946

Merit: 1006

Bitcoin / Crypto mining Hardware.

Quote from: Prelude on December 03, 2015, 10:23:46 AM

Quote from: goxed on December 03, 2015, 06:31:16 AM

Quote from: dmwardjr on December 02, 2015, 12:29:36 PM

Quote from: goxed on December 02, 2015, 06:13:25 AM

Quote from: vortexz on December 01, 2015, 06:15:27 AM

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual. It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

Very nice overclock! What power supply are you using, and what voltage are you measuring at the hash boards? I can't seem to get my units happy over 662.

I am using the Bitmain PSU. Will measure voltage and power soon.

Prelude

legendary

Activity: 1596

Merit: 1000

Quote from: goxed on December 03, 2015, 06:31:16 AM

Quote from: dmwardjr on December 02, 2015, 12:29:36 PM

Quote from: goxed on December 02, 2015, 06:13:25 AM

Quote from: vortexz on December 01, 2015, 06:15:27 AM

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual. It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

Very nice overclock! What power supply are you using, and what voltage are you measuring at the hash boards? I can't seem to get my units happy over 662.

vortexz

legendary

Activity: 1120

Merit: 1001

Quote from: goxed on December 03, 2015, 06:31:16 AM

Quote from: dmwardjr on December 02, 2015, 12:29:36 PM

Quote from: goxed on December 02, 2015, 06:13:25 AM

Quote from: vortexz on December 01, 2015, 06:15:27 AM

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual. It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

nice OC you have there, 5.44 TH/s

goxed

legendary

Activity: 1946

Merit: 1006

Bitcoin / Crypto mining Hardware.

Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 171. (Read 528055 times)