BITMAIN Antminer S3 support and OverClocking thread

[ernestocba]

Hey guys.
I've done an overclock on my Antminer s3+ and everything is changed and saved but unfortunately the clockrate and the hashspeed on the webinterface stays the same.
Anyone who had the same issue?

Did you just change the clock from 218 to 225? Sometimes that will not up the hashrate. You may need to try higher or stick with 218.

I also have a similar problem, i did all the changes from 218 to 250 freq. But when i go to check on the antminer ip address 192.168.1.99 the frequency on the miner status bar show the old frequency 225 mmmm that has always been the same ebeen when it was set in 218 freq by default. im just wondering why ?

Does anyone of you know why ?

[captainpugwash]

Just had a few more S3's from B10 delivered all working fine except for 1.

I setup the miner restarted it, found it on its new IP. I can SSH into it but cannot manage it through the web GUI.

Anyone else had this problem?

Any suggestions?

I tried resetting it, again went in on 192.168.1.99 and reconfigured it, soon as it reboots you can't manage it from a web browser?

I checked the pool and its happily mining away, I just cant manage it

I did wonder about flashing the firmware to see if that fixes it?

If anyone can offer any help/suggestions I'd be grateful.

EDIT:- I reset the S3 to factory settings and flashed the firmware, all good now

[virtualFudge]

So I started trying to overclock my S3 this weekend and I edited the config file and everything to overclock it to 250, however, there wasn't a change in my hash rate and on the miner stats page, it says my frequency is still 225. I've messed around with it and can't figure out why it won't respond to my edits in the config file. Any help would be appreciated. Thank You.

[pekatete]

So I started trying to overclock my S3 this weekend and I edited the config file and everything to overclock it to 250, however, there wasn't a change in my hash rate and on the miner stats page, it says my frequency is still 225. I've messed around with it and can't figure out why it won't respond to my edits in the config file. Any help would be appreciated. Thank You.

First, you should read the earlier comments where it is clearly explained that editing the asic-freq file will NOT do it (for S3+). If your firmware is still S3, then you'll have to update it to the latest from the bitmain site.

To overclock, browse to the Miner Configuration tab and click on Advanced Settings (greyed-out), then select your required frequency from the drop-down (stock is maxed to 250) then click Save and Apply.

[virtualFudge]

So I started trying to overclock my S3 this weekend and I edited the config file and everything to overclock it to 250, however, there wasn't a change in my hash rate and on the miner stats page, it says my frequency is still 225. I've messed around with it and can't figure out why it won't respond to my edits in the config file. Any help would be appreciated. Thank You.

First, you should read the earlier comments where it is clearly explained that editing the asic-freq file will NOT do it (for S3+). If your firmware is still S3, then you'll have to update it to the latest from the bitmain site.

To overclock, browse to the Miner Configuration tab and click on Advanced Settings (greyed-out), then select your required frequency from the drop-down (stock is maxed to 250) then click Save and Apply.

Excuse for not reading those comments, I went through the first few pages and couldn't find an answer, and it didn't seem like anyone else had the same problem I did but thats probably becuase it was a dumb question. Thanks for helping a noob.

[pekatete]

My sweet spot is 243.75. One if them does 250 @ ~504 GH/s with very few errors.

One thing I've noticed with the S3's is sometimes when you reboot them they get stuck at a low hash rate. I just reboot again and the problems goes away.

If you are powering it up OK (an S3+) then you could go for 262.5 @~ 525 GH/s (look at the thread in my sig).

Also, if you reboot via the GUI or power-cycle then yes, the "reported" hash rate in the GUI will be low (in actual fact the unit is hashing normally). If you reboot via SSH (or scheduled tasks) then you'll not have this anomally.

[techman05]

Any idea what changed in the newest version of bitmaintechs s3 firmware. it has a field for voltage and its not filled and there's no buttons to apply it if I knew the voltage.

I guess I'm going to turn back to v4 firmware and hope for an update soon.

[Ustler]

Instructions on how to fix:


1) Download the updated firmware from: https://bitmaintech.com/support.htm?pid=007201407180243004432lBQW28O0633
2) SSH/Putty into S3
3) Paste the code in below.. Will replace Save&Apply with Save&Apply.

Code:

Code:

sed -i 's/Save\&Apply/Save\&Apply/g' /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua

4) Execute the following code
Code:

Code:

/etc/init.d/cgminer restart

Voltage setting speculation:

https://bitcointalk.org/index.php?topic=671189.7580

(Note voltage, to me, looks like it accidentally leaked over from S4 codeline.. I could be wrong though)

[Ustler]

@techman05

The main changes appear to be to status page layout and upgrade of cgminer 4.6.1.

[techman05]

O.k but whatever happened I updated 2 s3's and I had no buttons in mining config and an xml code error that I couldn't get around except by using internet explorer which seemed to iqnore the xml error.

If I go tweak and it runs I kinda wonder why they didn't change it up on the page yet. at least they fixed the v4 firmware so I didn't have to go set the default speed to get my miner up after flashing.

[techman05]

fix fixed those things. I still made sure to apply the speed settings just to make sure it was right.

[geekontherun]

anyone familiar with openwrt's implementation of opkg? apparently on the S3's "OPKG Update" isn't working.

When I run it i get the following:

Code:

root@LabS31:/# opkg update
Downloading http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/Packages.gz.
wget: server returned error: HTTP/1.1 404 Not Found
Collected errors:
 * opkg_download: Failed to download http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/Packages.gz, wget returned 1.

I checked the path at http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/ and Packages.gz does not exist.

Anyone have a clue how to resolve this?

To solve that issue click on the OPKG-Configuration tab and paste the following into the configuration field then Submit the changes:

src/gz barrier_breaker http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/packages/
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists
option overlay_root /overlay

[alesx.onfire]

I rebooted and no change at all.
Do I need to upgrade the firmware, or something? 

It was working fine until I updated to the last firmware 

[Ustler]

Bitmain released fixed firmware on their website (Firefox/chrome support mentioned). Should just need to flash firmware and it should work.

My fix is no longer applicable.

[soy]

 Trying to think   when I first set this one up , it didn't seem right ! in the process of debugging n chking cables one of the new cables smoked ! But then I changed hash brds , controller brd , power brd . basically everything   Physical chking of the unit shows the new cable to xd out brd getting quit warm !???

I'd unplug the boards and measure the resistance between the +12v and GND, comparing the two hashing board results.  Then I'd look for a reason the one board had a lower figure.  Each board has two +12v test point pads so you'll take 4 measurements. 

[mrpark]

I tried this new update on a regular S3, now when I go to "miner status" it can't find the page. I rolled it back, any explanation for this? It's very strange because one of my miners worked, then the next 2 didn't. I will just leave that update alone for now.

[causalloop]

Question guys.

With 218.75 and 225 its necessary to use 4 PCIE? Or with just 2 PCIE its ok?? For 218.75 im sure i can just use 2 PCIE, but for 225 frequency im not that sure.

right now i have 4 PCIE for both, 716W total

My recommendation is to use four cables for better stability.
But its not a necessity. If you are overclocking I now strongly recommend(unlike earlier) to use 4 power cables.

I wanted to use Corsair CX750M for both, but yeah i have one at 225 frequency, so thats OC and i suppose with just 2 PCIE wont work very well maybe

Hey guys, just wanted to chime in here.  I parsed through some of this thread but this thread is so big (so this may have been mentioned before - in which case I apologize)...

Anway, I have a CX750M and 2 S3+'s.  Kept tripping the breaker (turned out to not be my fault), but in the course of tracking things down, I had my two miners OC'd to 237.5.  Not a huge jump over the base 225, but its easy to forget that an overclock bumps the power usage up (quite a bit apparently).... anyway, I grabbed my ever-so-accurate kill-o-watt meter and had it display the amps/wattage usage and was floored that I was drawing over 850 watts!  I've had it set up this way for almost 2 weeks!  The fact that the power supply didn't eat itself I think is a testament to quality engineering...  suffice to say, I'd like my PS to last so I dropped them back to the stock 225 and was surprised to see the meter only drop to about 775 watts.  I'm sure there's some math in there that should leave me un-surprised, but even accounting for inaccuracy in the meter, its clearly pushing the PS to its limits.

Interestingly, (and un-surprisingly) the power cord was very warm - but the 6 pin connectors to the rails weren't.  I'm guessing this is just a quirk of the 120v ac to 12v/5v dc conversion, but I was expecting the connectors to be hot. 

ANYWAY...  CX750M - just enough for 2 stock S3+'s, but I'm a bit wary.  Unfortunately getting a bigger PS isn't going to solve the problem until the chick with the space heater under her desk decides to use a different outlet...   

I'm considering getting clever about it and getting the bigger PSU and setting some sort of timer, but I'm not sure how much effort I want to put into that when I can just sneak into her cube after hours and switch the plug (a circuit tester would be handy...)

cheers!

[cenicsoft]

Hey guys, just wanted to chime in here.  I parsed through some of this thread but this thread is so big (so this may have been mentioned before - in which case I apologize)...

Anway, I have a CX750M and 2 S3+'s.  Kept tripping the breaker (turned out to not be my fault), but in the course of tracking things down, I had my two miners OC'd to 237.5.  Not a huge jump over the base 225, but its easy to forget that an overclock bumps the power usage up (quite a bit apparently).... anyway, I grabbed my ever-so-accurate kill-o-watt meter and had it display the amps/wattage usage and was floored that I was drawing over 850 watts!  I've had it set up this way for almost 2 weeks!  The fact that the power supply didn't eat itself I think is a testament to quality engineering...  suffice to say, I'd like my PS to last so I dropped them back to the stock 225 and was surprised to see the meter only drop to about 775 watts.  I'm sure there's some math in there that should leave me un-surprised, but even accounting for inaccuracy in the meter, its clearly pushing the PS to its limits.

Interestingly, (and un-surprisingly) the power cord was very warm - but the 6 pin connectors to the rails weren't.  I'm guessing this is just a quirk of the 120v ac to 12v/5v dc conversion, but I was expecting the connectors to be hot. 

ANYWAY...  CX750M - just enough for 2 stock S3+'s, but I'm a bit wary.  Unfortunately getting a bigger PS isn't going to solve the problem until the chick with the space heater under her desk decides to use a different outlet...   

I'm considering getting clever about it and getting the bigger PSU and setting some sort of timer, but I'm not sure how much effort I want to put into that when I can just sneak into her cube after hours and switch the plug (a circuit tester would be handy...)

cheers!

The watt ratings of modern power supplies are their ability to supply that much power to the devices in DC, not how much it's going to draw from the wall in AC.  An 80+ bronze rated power supply is ~ 80% efficient at converting from AC to DC. Therefore a 750 watt power supply could actually draw as much as 937.5 Watts from the wall (750 / ..

Better quality power supplies are designed to supply sustained power to connected devices at the rated wattage in DC, but need to pull more from the wall in AC. The loss is dissipated as heat during the conversion from AC to DC.

If your power supply is handling the load for sustained periods of time, then you should be okay.

[Stealthbomber76]

Hi..Newbie in da house..

I do wunder about Oc alot cause in my S3 i did oc and...well nothing happend :O The Gh/s is pretty much the same.. Even when did all by as you in here has wrote about the freq and so 250 as it is at the top.. Nothing.. One S3 showing Freq of 231.25 :O BUT with no Hw error.. running (30min) Why no speeding ticket's?? Has any else see this?

[cenicsoft]

Hi..Newbie in da house..

I do wunder about Oc alot cause in my S3 i did oc and...well nothing happend :O The Gh/s is pretty much the same.. Even when did all by as you in here has wrote about the freq and so 250 as it is at the top.. Nothing.. One S3 showing Freq of 231.25 :O BUT with no Hw error.. running (30min) Why no speeding ticket's?? Has any else see this?

Yes. It's possible to not see an improvement at higher clock speeds.  Sometimes you may even see a decline in hash rate at higher clock speeds. You should test various clock speeds to see which performs best over at least an hour period.  Once you find that sweet spot, stick with it. Ideally, you want the highest hash rate and the lowest possible clock speed with the fewest hardware errors. That will save you on electricity!