Kano ?
Kano, works on the cgminer team. Edit: here's his github page for the S2: https://github.com/kanoi/cgminer-binaries/tree/master/AntS2
Oh thank goodness, a fix for the beeping! Loving this firmware already!
Topic: Antminer S2 Support and Overclocking Thread - page 5. (Read 26666 times)
Edit: here's his github page for the S2: https://github.com/kanoi/cgminer-binaries/tree/master/AntS2
Oh thank goodness, a fix for the beeping! Loving this firmware already!
Kano ?
Kano, works on the cgminer team. Edit: here's his github page for the S2: https://github.com/kanoi/cgminer-binaries/tree/master/AntS2
Hi !
If you upgrage to the latest firmware from Bitmain website you can get rid of that problem.
The SD card where the boot image is stored is corrupted due to Bitmain's deployment process maybe.
I did it on 2 units, it worked, problem solved.
If you upgrage to the latest firmware from Bitmain website you can get rid of that problem.
The SD card where the boot image is stored is corrupted due to Bitmain's deployment process maybe.
I did it on 2 units, it worked, problem solved.
Maybe someone knows why my network and pool settings resetting to default every time I reboot my S2? Is there any file(s) in which I can configure my personal settings by hands (since the system does not save settings automatically)?
Mine have been running cool enough for weeks on the stock fans but I have a few extra really high CFM fans laying around maybe ill try changing them out on one miner and compare temps over a few days. If anyone has discovered any settings that worked for them that are not in this thread let me know so I can update the main page
Great job! thanks. Scored a very cheap ocz 1250w and the money saved went on a fan upgrade - 4x 140mm Akasa Viper Fans (S-FLOW)
Bloody hell! what a difference in noise level and air moved... remember the jet fighter you hear when the ant miner powers on? well thats flown..
would really recommend a fan upgrade as part of the overclocking
Bloody hell! what a difference in noise level and air moved... remember the jet fighter you hear when the ant miner powers on? well thats flown..
would really recommend a fan upgrade as part of the overclocking
I also need a way to shut this thing up if anyone knows one!
I'll desolder the speaker if someone can tell me what kind of screw head I need to pull the LCD board out ... though obviously I'd prefer a method in software, which survives reboots ...
I run this thing in my home. My Internet does go out every once in a while ... usually in the middle of the night, and "BEEP BEEP BEEP" - this bloody box lets everyone in the house know when it does ...
The checkbox in the web interface does literally nothing ... literally - when cgminer starts up it says it has no idea what the option which that toggles even means ...
Any help would be greatly appreciated ...
I'll desolder the speaker if someone can tell me what kind of screw head I need to pull the LCD board out ... though obviously I'd prefer a method in software, which survives reboots ...
I run this thing in my home. My Internet does go out every once in a while ... usually in the middle of the night, and "BEEP BEEP BEEP" - this bloody box lets everyone in the house know when it does ...
The checkbox in the web interface does literally nothing ... literally - when cgminer starts up it says it has no idea what the option which that toggles even means ...
Any help would be greatly appreciated ...
Thanks for the tip about them being the same chips as the S1! I think I saw a 225 S1 setting somewhere so I'll try the magic hex from that to see if I can get her rocking at 225 ... will report back! 
Yeah, 225/6386 thus far (30 minutes in) is giving me about the same hashrate (0.85% increase), and more than double the hardware errors (7.43% vs. 2.33%) ...
The only hex I could find for the frequency in the middle (221.88), 6306, doesn't take on the S2, so I guess I'm sticking with 218.75 until they release their official upgrade path ...
great instructions...though mine never went above 212 without stability issues. Wow. Shame.
I threw a Corsair 1250 (non-i, just the regular not even modular version) in and I'm rocking 218 and ~1.11 Th/s VERY happily. I left the 6th PCI-E connector off the backplane, the same as how the unit was shipped to me ... not sure if having it connected was doing anything, but when one of my cards appeared dead I disconnected it as part of my troubleshooting and everything was happy so I just left it disconnected (and after reseating and moving cards around that card came back to life thankfully) ...
Thanks for the tip about them being the same chips as the S1! I think I saw a 225 S1 setting somewhere so I'll try the magic hex from that to see if I can get her rocking at 225 ... will report back!
great instructions...though mine never went above 212 without stability issues. thank you, as usual with overclocking individual results vary I have 2 units that over clocked well 1 didnt improve much just a big increase in HW errors
great instructions...though mine never went above 212 without stability issues. 
Getting my corsair ax1200w also soon and the chips are the same as with the s1 so you can check those settings aswel. Will update soon to post my findings
The timeouts in the stock asic-freq.conf appear to *decrease* as the frequency goes up ... but here you've got them going up with frequency ... has anyone played with timeout values on the S2 much? I'm just starting to myself, but from what I'm seeing, 218.75/35 yields a better average hashrate than 218.75/38 ...
Also curious what people are seeing when they push further than that? I've got a 1250W PSU in there now, and the chips sure don't seem hot as is stated in this thread at 218.75 ... they're all sitting very comfortably at < 60 degrees in an air conditioned bedroom ... what are people defining as "too hot" when they're trying to go further than that?
Also curious what people are seeing when they push further than that? I've got a 1250W PSU in there now, and the chips sure don't seem hot as is stated in this thread at 218.75 ... they're all sitting very comfortably at < 60 degrees in an air conditioned bedroom ... what are people defining as "too hot" when they're trying to go further than that?
What would be the correct settings for the 218 overclock?
~ Luc
~ Luc
option 'freq_value' '5102' #219M
option 'chip_freq' '218.75'
option 'timeout' '38'
What would be the correct settings for the 218 overclock?
~ Luc
~ Luc
No,
You did a really great job over clocking to 218 any more than that even with exra cooling gets to hot .Yes please share you setting
You did a really great job over clocking to 218 any more than that even with exra cooling gets to hot .Yes please share you setting
I agree I see this as the best stable over clock that wont overload the hardware
No,
You did a really great job over clocking to 218 any more than that even with exra cooling gets to hot .Yes please share you setting
You did a really great job over clocking to 218 any more than that even with exra cooling gets to hot .Yes please share you setting
it looks like the freq_value is in hex.
Has anyone tested any higher settings with success? if so let me know so I can update this thread for others to try out. I am running stable at 1.11TH for over a week less than 0.45% HW errors
it looks like the freq_value is in hex.
yep,
I did try the 225 settings from the old antminer S1. There were around 4000 HW errors.Where to work out the % in HW.
A classic CPU over clock is adjust voltage with chip frequency .I wonder if the "freq_value" is actually voltage adjuster?
Once i learn what exactly these values are.Then i will commence overclock.It seems quite logical seen as they are the same chips as S1 then it would be very easy to get 2TH and more i would think that the voltage would double to 2000w on 2TH.
FAN UPGRADE :The only 140mm x 38mm fans i can find .
http://www.ebay.co.uk/itm/140mm-Silverstone-SST-FHP141-140x140x38mm-FHP-Series-Black-Case-Fan-/360936122720?pt=UK_Computing_Case_Fans&hash=item5409782960
EXTRA CHIP COOLING FINS :
http://www.aliexpress.com/item/Free-Shipping-1000pcs-8-8x8-8x5mm-Heatsink-Aluminum-Heat-Sink-Heat-Sink-for-Electronics-Computer-Transistor/1874592078.html
Thanks
~Luke
I did try the 225 settings from the old antminer S1. There were around 4000 HW errors.Where to work out the % in HW.
A classic CPU over clock is adjust voltage with chip frequency .I wonder if the "freq_value" is actually voltage adjuster?
Once i learn what exactly these values are.Then i will commence overclock.It seems quite logical seen as they are the same chips as S1 then it would be very easy to get 2TH and more i would think that the voltage would double to 2000w on 2TH.
FAN UPGRADE :The only 140mm x 38mm fans i can find .
http://www.ebay.co.uk/itm/140mm-Silverstone-SST-FHP141-140x140x38mm-FHP-Series-Black-Case-Fan-/360936122720?pt=UK_Computing_Case_Fans&hash=item5409782960
EXTRA CHIP COOLING FINS :
http://www.aliexpress.com/item/Free-Shipping-1000pcs-8-8x8-8x5mm-Heatsink-Aluminum-Heat-Sink-Heat-Sink-for-Electronics-Computer-Transistor/1874592078.html
Thanks
~Luke
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