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

[Biodom]

these are my 3 X S7 Batch 8
fan speed 40%



clipped images

Nice....let's see at 24hr.

[1715069684]

1715069684

[1715069684]

1715069684

[dog1965]

Can you power an antminer s7 off an evga 1300 and a corsair 500 watt psu? I'm thinking the 1300 for the blades and the 500 for the controller. Would this setup work?

http://www.onlinecomponents.com/mean-well-rsp150012.html?p=11953036&utm_source=google&utm_medium=cpc&utm_campaign=Shopping%20Suppliers&utm_term=&utm_content=F6xHtb5l&ref=GoogleAd:Shopping%20Suppliers-Mean%20Well&gclid=CP6-94qawsoCFcETHwodq_8Oqw&cshift_ck=e1d7389b-b386-40b8-ba15-c792ced55a6ccsF6xHtb5l

Use this one you need to use your own wires just wire them up yellow=+ black=-

even has a variable dc output from 10vdc to 13.8 vdc  This is what I use works great to.

here is the link for the PCI-E connectors. these are what I used very good quality.


http://www.gigampz.com/store/p7/6-Pin_PCIe_to_Bare_Wire_Cable,_24_Inches_(4-pack).html

[mc162BCT]

Haven't bought any miners direct from Bitmain since the S3/S5 days and I don't seem to remember any such delays in fact I was nearly always generally very pleased with the turnaround times then again that was before they started adding these obnoxious disclaimers right in the Product titles like:

ANTMINER S7 BATCH 8 - Shipped out within 5 days with full payment
Speed:    4.73TH/S
Weight:    4.5 kg
Price:       2.51 BTC
               ( 996.47 USD )

Anybody opt for the $70 extra dollars in hopes that a Batch 8 premium price would buy a more expeditious turnaround in the order time like maybe even similar or close to the old days of the S2/S3/S5 days?

Is this a stupid question?

Thanks in advance 

MikeC
PrincetonNJ

[wikkidtt]

I'm using a AX1200 to drive two boards and the controller and one RM750 to power the other hash board. Just making sure this is fine to do. Both running on 240v same breaker

[nhando]

Haven't bought any miners direct from Bitmain since the S3/S5 days and I don't seem to remember any such delays in fact I was nearly always generally very pleased with the turnaround times then again that was before they started adding these obnoxious disclaimers right in the Product titles like:

ANTMINER S7 BATCH 8 - Shipped out within 5 days with full payment
Speed:    4.73TH/S
Weight:    4.5 kg
Price:       2.51 BTC
               ( 996.47 USD )

Anybody opt for the $70 extra dollars in hopes that a Batch 8 premium price would buy a more expeditious turnaround in the order time like maybe even similar or close to the old days of the S2/S3/S5 days?

Is this a stupid question?

Thanks in advance 

MikeC
PrincetonNJ

Don't bother.  They will ship about the same date and you save $70.  The Batch 9 unit also comes with all the extra Hashboard controller and fan connections.  They are caught up on the shipping date as most remaining Batch 9 will be shipped out next week.   

[nhando]

I'm using a AX1200 to drive two boards and the controller and one RM750 to power the other hash board. Just making sure this is fine to do. Both running on 240v same breaker

That is the incorrect way of connecting it and may cause damage if you don't do the power on and off order properly.  Please see the User guide P4 which will show you exactly the power on and off cycle and how to connect it.  Using 2 PSU that you have is fine, just have to do it the right way.  The AX1200 is a very pricey PSU, and since you have 240V, why not sell that PSU and just get a IBM server PSU with J4bberwock board?  You can power multiple S7 for much cheaper per S7 and you don't have to worry about the power on and off order as you will have plenty of connections available.

https://enshop.bitmain.com/files/download/Antminer%20S7%20user%20guide.pdf

[wikkidtt]

I'm using a AX1200 to drive two boards and the controller and one RM750 to power the other hash board. Just making sure this is fine to do. Both running on 240v same breaker

That is the incorrect way of connecting it and may cause damage if you don't do the power on and off order properly.  Please see the User guide P4 which will show you exactly the power on and off cycle and how to connect it.  Using 2 PSU that you have is fine, just have to do it the right way.  The AX1200 is a very pricey PSU, and since you have 240V, why not sell that PSU and just get a IBM server PSU with J4bberwock board?  You can power multiple S7 for much cheaper per S7 and you don't have to worry about the power on and off order as you will have plenty of connections available.

https://enshop.bitmain.com/files/download/Antminer%20S7%20user%20guide.pdf

I had an ax1200 and rm750 that's why I'm using them. Got them about 6 months ago.

I did follow the boot up procedure. Powered on all boards before the controller. Boards 1&2 powered by ax1200 and board 3 & controller powered by rm750. The pci to the controller is delayed power via a relay for 5secs

[nhando]

I'm using a AX1200 to drive two boards and the controller and one RM750 to power the other hash board. Just making sure this is fine to do. Both running on 240v same breaker

That is the incorrect way of connecting it and may cause damage if you don't do the power on and off order properly.  Please see the User guide P4 which will show you exactly the power on and off cycle and how to connect it.  Using 2 PSU that you have is fine, just have to do it the right way.  The AX1200 is a very pricey PSU, and since you have 240V, why not sell that PSU and just get a IBM server PSU with J4bberwock board?  You can power multiple S7 for much cheaper per S7 and you don't have to worry about the power on and off order as you will have plenty of connections available.

https://enshop.bitmain.com/files/download/Antminer%20S7%20user%20guide.pdf

I had an ax1200 and rm750 that's why I'm using them. Got them about 6 months ago.

I did follow the boot up procedure. Powered on all boards before the controller. Boards 1&2 powered by ax1200 and board 3 & controller powered by rm750. The pci to the controller is delayed power via a relay for 5secs

Then you should be good.  You mentioned a backward configuration initially. 

[nhando]

Anyone try connecting 3 S7 together yet?  Since they have the extra FAN and Hashboard connectors like the S5+.    Would be cool, just 1 network cable to run and good for failover should 1 controller die.

[yslyung]

post your errors guys & gals.

most of mine are no more than 0.001%

what's your highest & lowest ?

any difference between miner & pool side ?

[yslyung]

Anyone try connecting 3 S7 together yet?  Since they have the extra FAN and Hashboard connectors like the S5+.    Would be cool, just 1 network cable to run and good for failover should 1 controller die.

max is 6 blades per controller but with slightly reduced hashrate (the more boards on 1 controller the lower the total hashrate). last i heard it does not work on newer fw's.

i tried, it works but i run individual controllers per miner. will use the feature if a controller is broken.

[VirosaGITS]

post your errors guys & gals.

most of mine are no more than 0.001%

what's your highest & lowest ?

any difference between miner & pool side ?

I only have one S7. It is a B8;



Error wise it is rather clean.

[hawkfish007]

post your errors guys & gals.

most of mine are no more than 0.001%

what's your highest & lowest ?

any difference between miner & pool side ?

I only have one S7. It is a B8;



Error wise it is rather clean.

Mine are at either 0.0000% or 0.0001% too. I have B1, 3, 4, 5, 6, 7 and 8s. B9s are still unshipped, order date Jan 16.

[mavericklm]

My 4 b8 are also with 0.0000000% error rate!

@marvykkio: pretty cold ambient! is that ~10C?

[yslyung]

wow very low rates ! awesome but of course those are at stock clocks. i'm wondering abt those oc'ed.

what is acceptable & what is not for hwe, yes many have their own opinions.

but of course best is to keep it low & cool heh.

[VirosaGITS]

wow very low rates ! awesome but of course those are at stock clocks. i'm wondering abt those oc'ed.

what is acceptable & what is not for hwe, yes many have their own opinions.

but of course best is to keep it low & cool heh.

HWE% does not really matter. If someone give you an "opinion" for that, then maybe you should stick to facts instead.

Its just an indicator, as long as your effective hashrate goes up at proper J/GH for each and every clock step, you are good to go. Of course assuming you keep the temps in the green zone.

1% Would mean you're wasting 1% of your shares, if you're getting an effective 3% speed boost per step, then there is no problem at all. Again, assuming you run it at proper temps. But 1% is probably far from what you can reach, at max overclock my S5's don't even reach 0.001% HWE which is fantastic. Thats effectively 0gh loss.

But the S7 seem more fragile than the S3/S5, so overclocking them during the warranty period seem like a risk not worth it. The lower quality design may see more failure when overclocked even at right temp for reason completely unrelated to chip performance and efficiency. (Which is what HWE% is)

Tbh the chip seem great, but the board build, not so much.

[yslyung]

wow very low rates ! awesome but of course those are at stock clocks. i'm wondering abt those oc'ed.

what is acceptable & what is not for hwe, yes many have their own opinions.

but of course best is to keep it low & cool heh.

HWE% does not really matter. If someone give you an "opinion" for that, then maybe you should stick to facts instead.

Its just an indicator, as long as your effective hashrate goes up at proper J/GH for each and every clock step, you are good to go. Of course assuming you keep the temps in the green zone.

1% Would mean you're wasting 1% of your shares, if you're getting an effective 3% speed boost per step, then there is no problem at all. Again, assuming you run it at proper temps. But 1% is probably far from what you can reach, at max overclock my S5's don't even reach 0.001% HWE which is fantastic. Thats effectively 0gh loss.

But the S7 seem more fragile than the S3/S5, so overclocking them during the warranty period seem like a risk not worth it. The lower quality design may see more failure when overclocked even at right temp for reason completely unrelated to chip performance and efficiency. (Which is what HWE% is)

Tbh the chip seem great, but the board build, not so much.

you forgot to mention the fw too

temps are important but many forget abt voltages required to push it higher.

yeah the s7's are finicky.

thx for the info, yeah during warranty period better to keep it stock, well even after warranty best to keep it low & cool. rather not push it too far.

[VirosaGITS]

you forgot to mention the fw too

temps are important but many forget abt voltages required to push it higher.

yeah the s7's are finicky.

thx for the info, yeah during warranty period better to keep it stock, well even after warranty best to keep it low & cool. rather not push it too far.

Yeah well, i don't have much to say about the Firmware, stock seem fine, so changing would just be a waste and the few reports of people ignoring warning and flashing it, that did not brick their S7 anyways, reported 0 performance difference.

So it sound to me like there is no point in changing it, unless you want to take a shot at bricking your controller for 0 gain.

I will probably wait and see how much S7 are reported to break vs reported not to break after most people's warranty period is over, i suspect there will be more data.

Because honestly, i'm not going to be pushing my S7 before i think the risk is worth it and so far, with the data i seen, getting an extra 100gh/s at efficiency loss is not really that great.

[wikkidtt]

Batch 9

4.705th avg

.00072 error % after 1 day @ 693

Temps in high 30°

[nhando]

When can a member have the full privilege to post the picture in the thread?  Senior level?  It's a pain to use Imgur and have to request others to quote for the picture to show.  Here are a few of my batch 9 S7.  I under clock 1 of the box to 675M just to see how much less Hash Rate I would get.   I do have 1 x S7 that is reporting .3% error rate that is not shown here but even so, it's hash rate is up to par.  I still have many more boxes to configure and power is not fully ready yet.  Notice all of the FAN speed is all over the map in RPM?  There is no consistency even though all of them are set to 60% manual speed.  The only time I would expect for this to happen is a person swap to different FAN type but these are all brand new OEMs.   I noticed some of the S7 even with the same settings can run 5-7C hotter or cooler than the others.  The ones that runs hotter are generally 5% faster then the ones that runs too cool.

https://i.imgur.com/UDOvNnV.jpg