Topic: ANTMINER S2 Discussion and Support Thread - page 24. (Read 355820 times)

HA HA HA     

with these PSUs, u can power up maybe 5 S2 

 Batch 5 S2 PSU's have been delivered guys.

not now, they're focusing on these S3 things
something about password in S2...
u have to wait for S2 new firmware

Hi Bitmain,

Is there a way to change the web-interface password using ssh?

~ Luc

better wait for S3 batch 4
its like a gambling if buying this miner at such price

The price has really come down from what it was but its still really high! As said before we don't see ROI with this kind of hardware and BTC price :-/

How we can upgraded??? What chips 28nm

wow, no need to ask for "S4" while ur S3 hasnt arrived at ur place
be patient bro...dont rush these Bitmain guys 

Not that this should come as a surprise, but I asked Bitmain about the launch date of the S4 and they wouldn't give any details... but they did refer to it as the "S4" - so at least we know we're calling it by the right name  

Also, $1499 $1489 now on Amazon

Agree, seems like s3 is a better deal right now. Will wait for s4 in the meantime

It's not profitable anymore. Even with price of 1640$ it's not worth it at the prices of bitcoin less than 700$.

Is there anyway to change the interface password by ssh?

buy the S3 sir...
if u still want this S2, buy at $1000 or you'll be having a tough time to ROI

Just wondering if its worth buying one of these? With the current difficulty it seems the ROI would take a pretty long time before making any real profit.

Are you using the stock PSU? If so that is most likely the cause....getting 1000+W out of a 1000W PSU...well.....whose bright idea was that to begin with   all I can think is such a mass amount of potential in a box with a few gears missing...PSU is the weakest link...but on that note I can run 9 boards at 215 with no reboots using the DIY S2 kit and stock PSU...what great fun   torture for the PSU at any rate....never mind the efficiency which went out the window at 85% MAX
as for what working well with one not working well on the other...tell me about it   I think that is largely due to the random wondrous thermal grease application which boggles the mind...Im sure there was some kind of connect the dot game at the plant using thermal grease..some boards I have even have some autographs on them instead of grease I assume from the winners  ...I wonder if they were so good they didn't need any...why else would they be signed  
Regarding some miners resetting to default config...well I had 3 SD cards which did that...I snapped the first one after it failed to save the config for the time after reflashing/imaging/ plug and mine   that I chalked up to all 3 having a smaller amount of available space which I found out after trying to re-image them with working SD card images from the other 4GB junk ...they didn't fit on the "faulty" cards for some reason...even the SD cards are different between machines...those are in the bin anyways class 4 cards belong there in 2014 in my opinion...4MB/s wow watch out...I replaced all SD cards with Kingston Class 10 microSD which are more than double the speed and work just great...if you can find smaller class 10 than 8GB go for it but for the $7 I didn't care...
Last of all...don't mess with any of this unless you know what you are doing...I wont take responsibility for anything that happens...unless its a good thing then a thank you will do  

i can order S3 only :p
hehehe

thx macgyver!!

u can upload screenshots/images on imgurl and copy the IMG codes in here to post.

im so glad u posted, i knew there was someone in the world who actually cared about these s2's

i have 4 and like yours they are ALL different, boards, cases, lids, even down to the 'buzzers' different tones/volumes...

the only constant is the shit psu and the high error rate..

At the standard frequency, my S2 slowly clocks down to ~950 in 24 hours.  After underclocking it to frequency 193 it immediately levels out at ~ 975 in a few hours, and is more resilient to rebooting or restarting cgminer.  I've not changed the timing, but would be happy to test them out with you if I could assist.  That said, these machines are very unlike the S1's (finicky to say the least) and what works well with one may not work well on another.

I am experimenting between 37-39 right now and 39 and 38 seem to give the best output so far...hard to tell in less than 48 hours...it seems some boards can handle 38 timeout better than others...not sure if we can use decimals like S3 but I don't see why not..also with some timeout hashrate starts high but drops after a day or vice versa..not sure if that is just a flaw in the firmware overall...
All units have .5 or .6% reject

I've been curious about that as well, and have tagged the timeout variable for additional research.  What timeout have you been using on your machines?