S3+ (BM1382) Overclocking with voltage setting

[luckypyrate]

Shameless bounty hunters, we miners are

[1714066726]

1714066726

[IITravel01]

This could probably be done easily by multiple people participating if one person put the info. all together.  Get people to post their results into one specific thread with directions on how to do each step and how to screen capture to post to that thread with the necessary stats.  Wouldn't need just one person and could eventually be completely filled in as more people add info.  The reason I selected 200M to 262.5M is that 200M seems to be the most power efficient if you're paying your own electric bill and 262.5M seems to be the highest OC without causing HW errors, etc.  The reason I stated .05v increments is to get the most detailed from the default voltage of 0770 to the suggested 0725 for the newest firmware, but could probably be done in .10v increments from 0720 to 0770 (6 volt. settings x 11 frequency settings = 66) to reduce the number of tests needed to fill in the graph/chart and also, if you find a sweet spot then the .05v could be added in between afterwards to get it more detailed later.  Would need to include which batch and which firmware used for each, also power rating with a Kill-o-Watt would make it more complete, as well as ratings for 120v vs. 220v.  Of course one person doing the original chart with the same equipment would probably make it much easier to start.

[pekatete]

There you go, I have put up a poll on the thread, hopefully we'll get a good response. i've also left it open so anyone can view the results.

With regard to getting different people to carry out the tests and collating the results, I'll leave that to yourself to start the thread for that. You can start off with an empty table listing the freqs and voltages that you want, then people can opt to do the test by posting a message before they start, stating the freq & voltage they are testing, then posting results when they are done and you filling in the table in the OP.

Shameless bounty hunters, we miners are

Ain't no shame in that ma friend .....

[mindtrip]

Great work. Thank you I have tested some of this on my C1 unit and can confirm the higher voltage settings with the higher clock speed add stability to my C1 16 days strong no X's as well as higher hash rate with the overclock. I will try some of these settings on my S3's I have most of mine running very low HW error rate at 250Mhz now so I will modify the Freq file and test out the higher voltage with the beyond stock Freq values.

[zelenoto]

On C1, with 218.75M(default) what voltage should i set, currently is 0760. Is it ok, because im not getting over 950ghs

[pekatete]

On C1, with 218.75M(default) what voltage should i set, currently is 0760. Is it ok, because im not getting over 950ghs

First, you need to ensure that your C1 is NOT running the November firmware before you can change the default setting. This thread is beyond that scope, but a lot has been said in the S3 discussion and support thread.

The datasheet setting for the freq range of 225 (which I'd say 218.75 falls) is 0.72v, so I'd test with a voltage setting of 0720 which should be more than adequate for that freq.

Again, do at your own risk!

[zelenoto]

On C1, with 218.75M(default) what voltage should i set, currently is 0760. Is it ok, because im not getting over 950ghs

First, you need to ensure that your C1 is NOT running the November firmware before you can change the default setting. This thread is beyond that scope, but a lot has been said in the S3 discussion and support thread.

The datasheet setting for the freq range of 225 (which I'd say 218.75 falls) is 0.72v, so I'd test with a voltage setting of 0720 which should be more than adequate for that freq.

Again, do at your own risk!

November firmare as i can see "File System Version Wed Nov 26 10:27:37 CST 2014"

[pekatete]

November firmare as i can see "File System Version Wed Nov 26 10:27:37 CST 2014"

I would steer clear of setting voltages on that. There are quite a few un-knowns about the Nov firmware update (mainly for the PIC), but I have seen a tech from bitmain advising NOT to alter voltage.
A word to a wise man is enough.

[HerbPean]

I tried many voltage (0.7 - 0.725 - 0.75 - 0.8 - 0.825) with different frequency and I'm getting good result for like 6 hours one machine and like 8-12 hours and two others, after that it's falling off.

I can't make them stable on the long run. They need restart.

[Breeze]

alias: -l not found
root@AntMinerS3:~# /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua
-ash: /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua: Permission denied
root@AntMinerS3:~#

So how can i add more of those frequencies?
The other thread didn't give any guidelines

[HerbPean]

alias: -l not found
root@AntMinerS3:~# /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua
-ash: /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua: Permission denied
root@AntMinerS3:~#

So how can i add more of those frequencies?
The other thread didn't give any guidelines

Which firmware version do you have ? You should update it to the October one.

that's my guess

[Breeze]

alias: -l not found
root@AntMinerS3:~# /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua
-ash: /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua: Permission denied
root@AntMinerS3:~#

So how can i add more of those frequencies?
The other thread didn't give any guidelines

Which firmware version do you have ? You should update it to the October one.

that's my guess

I tried both October f/w. But gonna try once more when i get home.

[HerbPean]

alias: -l not found
root@AntMinerS3:~# /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua
-ash: /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua: Permission denied
root@AntMinerS3:~#

So how can i add more of those frequencies?
The other thread didn't give any guidelines

Which firmware version do you have ? You should update it to the October one.

that's my guess

I tried both October f/w. But gonna try once more when i get home.

Never had a permission denied on that file.

[Breeze]

alias: -l not found
root@AntMinerS3:~# /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua
-ash: /usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua: Permission denied
root@AntMinerS3:~#

So how can i add more of those frequencies?
The other thread didn't give any guidelines

Which firmware version do you have ? You should update it to the October one.

that's my guess

I tried both October f/w. But gonna try once more when i get home.

Never had a permission denied on that file.

forgot to write vi  

[intobit459]

Running at 262.5 and 0750 what should the reg value and delay be set to as shown in chart on page 1 of this thread?  In etc config cgminer it says something like 10:262.5:09bb. I made up the numbers as im not available to check it now but thats what i am referring to.  Can someone post their cgminer config file running stable at 262.5 and 0750

Also at this setting you would only need 2 pcie cables correct?  Would hooking all 4 up cause more watts at the wall or help any?

[pekatete]

Running at 262.5 and 0750 what should the reg value and delay be set to as shown in chart on page 1 of this thread?  In etc config cgminer it says something like 10:262.5:09bb. I made up the numbers as im not available to check it now but thats what i am referring to.  Can someone post their cgminer config file running stable at 262.5 and 0750

Also at this setting you would only need 2 pcie cables correct?  Would hooking all 4 up cause more watts at the wall or help any?

I am not sure why you refer to the /etc/cgminer file as the new firmware (where you can set voltage) uses another file to set timeout, freq and regvalue. There is a link in the OP in this regard (about adding frequencies), and extracting the 262.5 freq line I get: 15:262.5:0a02

Running at that freq with a voltage setting of 0750 has a theoretical power draw of approx 300 watts for the chips and a fully populated 6 pin PCI-e connector can carry (12v * 7.5A) * 3 = 270 watts each (540watts for both), so with at least a 550 watt PSU (edit: with all the wattage on the 12v rails) powering your S3 variant, you only need 2 PCI-e connectors. The power draw at the wall will only increase if / depending on the PSU you have powering your rig, and if over-specified, there won't be a change. Given that the default setting was 0725, 0750 is only a mild increase!

[intobit459]

Theres two lines for 262.5 are people using the 15 or 16 delay?
And how do voltage settings compare from an s3+ to my antminer s3 b1. Would it be the same voltage a real 0750. Or more or less.
In voltage field i type 0750 correct?

[pekatete]

Theres two lines for 262.5 are people using the 15 or 16 delay?
And how do voltage settings compare from an s3+ to my antminer s3 b1. Would it be the same voltage a real 0750. Or more or less.
In voltage field i type 0750 correct?

For the timeout, take your pick! On a serious note, the timeout is simply the time to wait for a result (in milliseconds!) from the chain before new work is sent to the chain, bearing in mind that sending new work cancels any work already running on the chain. Since the "mining" is looking for the occurance of a share (is it a prime number?) in a range, then too short a timeout will result in the latter ranges not being searched (so if a share exists you'll not find it), and the flip side is a long timeout will result in the chain sitting idle for the extra time. Its a fine line but .... lets just say, its beyond this thread's realm.

Whatever batch of S3 you have, they have the same hashing chip, i.e the BM1382, and the voltage settings "should" have the same power draw. I say should advisedly as it has been documented in this hallowed forum (not thread) that the earlier batches of the S3 have different (and less capable) power regulators .... but again, that is beyond this thread's realms.

[intobit459]

Well what the heck is a regular value then, that other number?
along with the two timeouts for 262.5 there are also two regular values listed in link for same clock speed.

And to clarify i just type in 0750 in voltage field?

Mine gave .03-.04% hw errors when i first started before i left home.  Will proper timeout and regular value help?

I changed this 18:218.75:1106 to this 18:262.5:1106 in etc config cgminer. And voltage to 0750.  Was hashing over 500 and .03 to .04 error before i left. westhash shows 300-530 ghs. It goes up and down. I also added a nonce version of cgminer to my s3 i downloaded from bitmains site. This has nothing to do with version of cgminer and everything to do with firmware when talking voltages and clock correct? Firmware is 10.24

I thought default voltage shipped was 0785 is it actually 0725 so i am overvolting going to 0750?

I guess a better question is am i using more power with a setting of 0750 and 262.5 than a factory s3 batch 1 with factory settings?

[pekatete]

Well what the heck is a regular value then, that other number?

There is NO regular timeout for freq 262.5 as that freq does not ship but is simply added. Even the shipped freqs (look at the datasheet from the bitmain website) can have multiple timeouts (as is clear in the datasheet and one of the OP tables) , but bitmain do provide recomended (chain) timeouts for some freqs. That is why I said, take you pick from 15 or 16!

EDIT: Again, just notice that by regular value you mean reg value, I am perplexed why you keep asking that when I mentioned the thread for adding freqs that do not ship. That gives the reg value in the setting.

And to clarify i just type in 0750 in voltage field?

Yes

Mine gave .03-.04% hw errors when i first started before i left home.  Will proper timeout and regular value help?

No Just noticed by regular vlue you mean reg value. Reg value WILL help, but not timeout.

I changed this 18:218.75:1106 to this 18:262.5:1106 in etc config cgminer. And voltage to 0750.  Was hashing over 500 and .03 to .04 error before i left. westhash shows 300-530 ghs. It goes up and down. I also added a nonce version of cgminer to my s3 i downloaded from bitmains site

Beyond this thread's scope. For the freq timeouts and regvalue, try the thread I linked in the OP and for the rest you probably want to ask this in the westhash thread (if there is one), the cgminer thread or the S3 support thread.