Topic: What frequency works best for Antminer S7? (Read 18261 times)

Right always 1300W.
Amp is X2 at 110V.

Only if physics is broken, or that's the world's most inefficient power supply for some reason. The DC power consumed by the device will be the same regardless what the input voltage to the DC power supply is; the only way the power consumed would change is if the PSU runs at a different efficiency at a different input voltage, and that's rarely more than about 2% difference.

One S7 using 2600W would burst into flames in a matter of seconds.

1300W @220V
so 2600W@110V ?

Those are some really good temps considering the overclock. Have you checked power draw to see where the efficiency sits? The later batches are not as efficient (unmodded of course) as the original 54 chip boards were.

this is my configuration S7 B18

i got 3 S7 same batch..all same configuration

https://postimg.org/image/p2o65jlj5/

The cost could have something to do with whatever you're doing to make 1 S7 use 2600 watts 

Daily +- BTC0.00566026   or $3.73 for one unit of S7 @ 4730Ghs, barely enough to pay for the electricity bil

http://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=4730.00&p=2600.00&pc=0.00&pf=0.09&d=213492501107.51300000&r=12.70000000&er=659.27180000&hc=0.00

Hello Mr. with that configuration, how many BTC they paid per day?



Hello Mr. with that configuration, how many BTC they paid per day?

Batch 6, 32% fan speed

My S7-F1, added 2nd fan, running @700mhz with fan speed set to 95%, it hash 4.7ths avg @66'c -69'c with the room temp. @32'c

After reading for months, and confirming in this thread;  I am now confident that I have a batch 6 S7.

I run it all over the board freq wise.   Power supply is a re-wired Coolmax 1600.  It has 160A of 12v capability when you utilize 50A of 12v wires inside that are not leading to the PCIE modular ports from the factory.    Exhaust ducted to the outside.

Just a little while ago I set it to 500Mhz and 30% fan speed.   ~69-70* and hashing at 3.32Th average after 21 min.

Typically I have it at 600 and 55% fan speed.  Averaging 4.02Th....  ~50* temp and varies on ambient temp.

I have also upped the clock to 700, and fan speeds on max.   Ran 4.7Th average.  Average temp was ~58-64*.  Power supply liked to warm up pretty good on that run.    Hashed it for 4 days solid with no issues.


After some long runs Ill take screenshots and share.

Hye, thanks for the info

Can i increase the frequency?  The default frequency before is 700.00.

In the same time is ok if im set the fan speed limit to 85%?

Thanks guys!

My S7-F1 is working very nicely at 700 with the may 23rd FW

is normal, the fan full speed run at 5880 rpm...and your miner temp is good and should work perfect under stock frequency.

Rich, im using ANTMINER S7 BATCH 18.

Frequency set to 625.00 from 700.00, and this result is normal?

https://i.imgur.com/ycXB4gc.png

Im worried about Fan Speed now, its up to 5760 and 4200. Is that normal?  And may i know why my pool no 3 status is dead.

Thanks.

Thank you !

Yes everything since Batch 8 has been 700MHz.


Rich

Hello,

I just received my batch 16 S7, and the default frequency was set at 700....

Are they all at this freq since batch 9 ?

Hard reboot doesn't resolve this problem either, anyone any suggestions..? :-(

#1-4 done already, but anyways thanks for the response!

I was planning on doing a hard reboot this weekend when I have access. Hope that resolves the problem!

five four ways to fix this:

1. go to pool settings and simply click on save and apply (one time I had the same and this simple procedure fixed it).
2. go to "advanced" in gui and simply click on save and apply.
3. #1 followed in 10-15 min by #2.
4. go to system, click on reboot
5. hard reboot (if you have access to PSU).

I would do either #1 or #2 first, then see what happens and do another option.

Hello,

I have a antminer S7 from B6. After a week of running, one hashboard got only 36 chips running instead of 45. Anyone experience with this? Can I resolve this or are the other chips broken / dead??

Thx

These are all good points Rich

Regarding the power supplies I stick with the same kind of power supplies up until just recently when I changed over to EVGA for my last 5 S7's.  I don't really factor my power supply's voltage bouncing as a reason for the difference variations in miner performance.  If I was have voltage problems then I would think my problems would be much bigger than what I have previously described.  (which by the way I do not consider a problem) I would lean towards mass produced miners over high end power supplies but that is just me.  Regarding HW errors, yes I do get them, we all get them and that is something that would take forever to watch over a long period of time.  The truth is there are several things you can look at to monitor your minors.  The most obviously thing that people look for is how fast can it hash.  Now if I can get it hashing fast but the results are garbage and I am getting a lot of rejects, hw errors, etc then of course that is when I am going to dig deeper.  I wasn't trying to go quite that in dept as the question was regarding frequency settings.  I am pretty sure if you polled people on the forum they would all agree that not all minors behave the same and they doesn't mean we need to start to digging into power supplies/PCIe connections over a couple Ghs.  However that is just my opinion, and please note I completely respect what you had to say it is just not something I would do if personally as my farm is running great.  Some of my miners are over achievers and others are a little under achievers(very little) but overall I am averaging a happy 105TH.  Thanks for your feedback. 

Very strange effect, and not one I have observed on an S5 or seen reported on the 162 chip S7? It is difficult to speculate on reasons, until we understand exactly what has changed in Batch 6/8. However... one fanciful reason could be that the firmware powers up with the Buck Converter set to a voltage, then if there are xx it ups it a bit?

Rich

I wrote about this effect earlier. November 30, 2015,
https://bitcointalksearch.org/topic/m.13113139

One interesting observation re S7 Batch 6.

After ~2-3 min of initial start and any hard reboot, suddenly there are a lot of XX appearing, but speed does not drop at all, remarkably.
In a few seconds all XX are cleared and speed stays or increases slightly to reach the steady-state.
I think that this shows the effect of the buck converter in action.
EDIT: @Tupsu saw it on 11/30 I wonder if others saw the same, but it is difficult to catch as it happens only at that time (2-3 min after hard restart).

S7 batch 6 at 650 (at 600-0.0001% error)

Well that is the $64000 BTC160 question. I see a few possibilities.

1) There is no difference and batch 6 will run at 700MHz

2) They are selecting BM1385 and the Batch 8 ones are better than Batch 6

3) They have set the Buck Converter voltage higher in Batch 8

4) Somthing else.

S7 continues to be more of a mystery than any of it's predecessors and I look forward to the Day when a 135 chip version can be taken apart and some pictures taken and measurements made.  

Rich

You got nice OC there 

Ahh, I got 0.28W / GH @ wall. For some reason I thought the efficiency should be 0.25W / GH at wall.

yeah like the s-3 the new batches run much higher freq.

I am happy to have one really good one  and one so so one since I was early batch.

Once I get set with solar project I am hoping to run 20 kwatts worth of gear.

I've been experimenting too.



I didn't measure at the wall yet, but I did measure DC power coming from the PSU. Each blade is burning 500w, so 1500w / 5770gh = 0.259w/gh at the PSU. What's being pulled at the wall will depend on the quality of your PSU, obviously. I don't see why you're saying efficiency is bad, it's incredibly good considering it's running almost 1TH/s faster than stock.

To compare, stock 600MHz each blade pulls 412w. 1236w / 4860gh = 0.254w/gh at the PSU.


I'm overvolting the S7. PSU is outputting 12.58v unloaded, 12.48v loaded. running 600MHz = 12.4v at the blade, 737 = 12.33v at the blade.

I don't suggest anyone attempt this. It's definitely not good for the S7, and you risk killing it.

Playing around with the clocks today. Efficiency is bit poor for a S7 though: Power@Wall=1600watts.

Yes the default I know, which is 600MHz.

But some hash at 687MHz, around 4.7 TH/s. While others only hash around 3 TH/s with this frequency. Some other experience with this?

There is no firmware for Batch 6 yet. Default frequency should be 600MHz.

Rich

What is best settings for 3x 45 Asics is AntminerS7  batch 6.

The firmware from the website from Bitmain?
Or which frequency?

Thx in advance.

Very interesting. I am a firm believer that all miners are different and benefit from monitoring and adjustment to get the best from them. I have a couple of questions? 

If I understand correctly your approach seems to be to find the frequency at which the best hash rate is achieved? When doing this do you also look at the HW error rate and do you find when the Hash Rate is lower than expected for a Frequency that the HW error rate is high or is the error rate still ok?

Next have you considered that there could be a difference in your PSU's and that supply voltage that the miner has on the PCIe connectors could be different in some cases and that is influencing it's ability to hash at higher frequencies?

If you are not monitoring the voltage I would urge you to include it in your adjustment protocol as it may well add another dimension and enable you to achieve higher hash rates?


Rich

Honestly for me every miner is a little different.  With the exception of the 2 batch 7's the firmware is on those factory installed and on one of them I left it at 625 MHz and it mined at the advertised 5TH, the second batch 7 at 625 was performing poorly and I was only getting around 3.8TH so I dropped the freq to 600 and then is jumped up to 5TH.  The 19 others I have are batch 2 (which were advertised to run at 4.66TH at 575 TH), I flashed them with the most recent Bitmain firmware that supports the 600Mhz setting.  When I had the time I found that really going through them slowly and taking my time tweaking with the frequency (and not always up) making small changes has made an incredible difference.  For instance, I have some of mine set at 606MHz and some set 593Mhz.  I do not think I have anything set over 625 but you can certainly try.  Just make sure you are monitoring it closely when you make changes like that. I guess the whole point I am getting at is there is not perfect setting for every single miner out there.  You can have rough guidelines that work for most but if you are trying to dial in your farm, then you need to play with the settings to see what works with your farm.  Also keep in mind not all miners are going to perform at the highest Th rating possible.  Some of my miners no matter what settings I have changed and close I think I have dialed it in, I have had to settle for 4.5Th when I should be getting 4.8  and that ok, its just the way it goes.  If you are interested you can check out my mining set up here

https://www.youtube.com/watch?v=K1C2LQnBr2Y

If you like it, subscribe as I am always adding new content and I love audience feedback.  I look at bitcoin as a group learning effort.  In fact your thread has kinda of inspired me to create some kind of video addressing this very issue because I have seen this question or variations to this question come up before where people have had performance issues when dealing with several of the same type of bitmain products.  They are frustrated why two or more of the exact same product do not operate the exact same way. 

I hope this help!

when I used this psu with the s-7

https://www.trcelectronics.com/ecomm/pdf/rsp1500.pdf


I set volts to 13 and ran both the s-7 and the avalon 6

in both cases  efficiency drops a bit the s-7 is .26 on this psu at 600 clock and drifted up to .29 running at freq 631.25 my batch 1 got pretty hot and loud so I can't do long runs with fans blowing at 4200 rpm.

This psu was purchased for testing  the s-7 and avalon 6 for underclock not overclock.  And right now under clock under volt is a no go.

But I have determined this.  both the s-7 and the avalon 6 should have at least 12.2 volts  not 11.9  this means finksy + j4bberwock

has the best units to mine the 2x 2000  units with a few volts setting are the best gear (240 volts fuck the sound).

At finksy pm me when I can get one of them.

I no longer tell anyone to use ATX psu with this gear.  Unless you have only 120 volts power

You probably do not have Batch7 miner.


3x 45 Asics is AntminerS7  batch 6 and Batch 8

Hey,

A quick question, since I have also the S7 B7.

Did you just put the frequency up to 687 with the standard firmware, or you first updated the firmware?

Is this hashpower created to just making the frequency larger?

Greetz,
Dophoeve

[edit]: and whats that with the Asics # 54?, mine says 45

Going by the BM1385 Data sheet you should be ok even with 14V although I agree that 13V is a safe maximum. Also remember this does not apply to the 135 chip Batches 6 & 8 where you should stick with the Bitmain spec of 11.60 ~13.00V at least until we have confirmed that it is fitted with a Buck Converter, in which case there will be no value in varying the voltage.


Rich

afaik, the 2000bb's can be adjusted up to around 12.5-12.8V & down to about 11.6V in it's original form. i got mine to 12.5V with loads at the pcie cables attached to the s7's. you can even go higher than 14V up to over 200A on the 2000bb's but will have to mod pins with pot + resistor.

the 2880w not sure if the voltage can be adjusted. but i'm sure that the stock voltage would be around 12.2V range. that i hope j4b can chime in.

i feel alot more comfortable around 12.5V on the s7's tbh regardless of oc or uc.

i think max is 13V on load for the bm1385 chips & also as per bmt recommendations.

i could be wrong .. someone with more tech knowledge pls do chime in.

i posted up some pics on the s7 thread https://bitcointalksearch.org/topic/m.13130691

Amen to that...  Would love to know if efficiency has decreased at all at that clock speed, if you ever get a chance to measure ATW consumption!

Yes, will leave it at that. I see my miners as super-depreciatory assets.

Temperature sure came up overnight eh? Looks like hashrate is holding steady though, you going to leave it at that clock?

Done, pls look at the original post. 

Could you post a screen shot of a 24+ hour run time please?

S7 B7

Hi, again,

Since mine is a late batch 5, here it goes:
All the values, are in a controlled temperature room, at a steady 14ºC all year around, with a humidity of 60%.
I don't know the power consumption, but I have 2x 1250w HP PSU, powering the S7.
The values, are a average calculated, at 48 hours each.
http://www.dfagundes.com/Foruns/value.jpg
Since, I don't know how to interpreter this values, your help is appreciated!
I don't know if have any gain in going at more than 625...


All the Best,

Geotete

The IBM 2880's typically put out slightly over 12V, but only the 4K boards will have the option to under or over volt at this time. I believe J4bberwock has plans for more server PSU's that allow voltage control, but I'll leave that up to him when he's ready.

a naive question, perhaps, but are 2880W PSUs capable of slightly more than 12V or only 4000w "beasts" can do it?
I am just curious.

late Batch 5

That's batch 3, 5, or 1. That's the best I can do at narrowing it down.

Hi Everybody,

What batch is mine? Since the seller didn't specified?
What I have in the sticker is:
AntMiner S7 Submodel:S7_4.86

Model: S7 Version:V2.01

All the best,

Geotete

yeah both the s-7 and avalon 6 have show they want a hot psu  12.2 12.4 12.6

your new 2000 2x setup will be very good for them. better then the 2880 units.  I want one when you get them in.

Yes I am excited to produce some and try them out.  The one demo model I got from him I had to send out to get the side/front panels figured out.  Should be receiving the PCB's and start soldering this week.

 It is good for you as the 4000 watt 2x psu you sell has the ability to do more then one voltage.

In fact I no longer think atx psu's are worth using on the s-7 or the avalon 6  unless you have 120 volt power.

I think your adjustable units that you are selling for j4bberwock  are the way to go.

Batch: Batch 1
Frequency:  625
Hashrate: 5 th
Power consumption:  1225 at wall
Corsair RM1000 and RM650
Fan Speed: 30% 2760/2520 RPM
Avg Blade Temperature: 60
Hardware Errors: 0.0090%

Of course, sorry I meant for a given input voltage.  I.E. if your power supply stays the same, over/under clocking will have little to no effect on YOUR unit's efficiency, only the heat generated/overall power usage. I'll take voltage measurements at the plugs when I get a chance to visit "My Friend".

It's interesting both how important actual voltage output of a PSU has become w/ string design, and how picky some of the new hardware can be about under-volting.

My batch one is pretty much a dog
My batch two is pretty much a unicorn.

That said both of them can do 5000gh if you give them 12.5 volts.

This gear loves a hot psu.

Efficiency is only fixed for a single supply voltage. If people are running at more or less than 12V it will change. An interesting measurement would be peoples actual supply voltage measured at the PCIe connector?


Rich

No need to put down power consumption, their efficiency is basically fixed @ 0.25 W/GHs or 0.275 W/GHs ATW (depending on model) regardless of clock speed Edit: if your input voltage stays the same.  From Dogie's Antminer S7 setup thread, not sure who to give credit for it if not him: Edit: I assume this is at roughly +12V input

Batch: 2
Frequency: 606.25
Hashrate: 4,905.24 (21 day average)
Power consumption: 1120
Fan Speed: standard - 4,080 (rpm) and 3,840 (rpm)
Avg Blade Temperature: 48
Hardware Errors Per Day: 0.0024%

How are those temperatures on your miner? Does it perform better at slightly higher temps?

Mine tends to gain an extra 100GH when it runs around 55C. I haven't tried going for below 50C yet though.

Attention:

Below is the corresponding default frequency for S7 miners with hash rate and batch #.



With overclocking you lose the warranty.

Batch: 4
Frequency: 575
Hashrate: 4.6TH/s
Power consumption: 1112W from the wall
Fan Speed: 45% fixed
Avg Blade Temperature: 45C
Hardware Errors Per Day: 0.0147%

Please post your results, there are a lot of frequencies and setups, so please post the following in this format.



Batch: Batch#
Frequency: Freq#
Hashrate: Hashrate#
Power consumption: PowerConsumption# (If possible)
Fan Speed: FanSpeedPercentage#
Avg Blade Temperature: TempInCelcius#
Hardware Errors Per Day: HWerrors#


For example:


Batch: 6
Frequency: 575
Hashrate: 3.82TH/s
Power consumption: N/A
Fan Speed: 35%
Avg Blade Temperature: 54C
Hardware Errors Per Day: 3/day