Topic: ANTMINER S2 Discussion and Support Thread - page 137. (Read 355842 times)

S2 going back on sale, but as suspected the price is totally retarded … They can go fish ….. 3199 is still WAY over priced considering all the dam issues, and the fact that there is still no site on ROI at that price… Where do these guys dream this stuff up...

Sorry to put this in your face, as you've been awesome for the mining community, especially for the Antminer S1, but your pricing, design, and rollout of the S2 has been way off.

Pricing, you've been beat several times over by your competitors.  Best example, $2350 1 TH/s miner from Bit-Tech:

https://bitcointalksearch.org/topic/worldwidebitmine-950-ghs-1500-usd-next-day-delivery-409701

Design, just based from the feedback on this thread.  Blades disconnected, cables unplugged, quality control issues.  Either the S2 isn't packaged correctly, or the case design is horrible.

Rollout in batches now.  What happened to the shipping from in stock or in hand model?  This is basically a shortened pre-order model which causes inflated demand with everyone trying to get in line to make the batch cut.

Hopefully for the S3, you go back to the S1 model of rock solid design, competitive and affordable pricing, and always shipping from stock.

You already have the most popular miner in the world, maybe listen to the community that put you there.

will be a late night for me counting down

AntMiner S2 1TH/s Miner Batch 3 Sales Open

Bitmain Technologies Limited is proud to announce ANTMINER S2 sales open at 22:00pm BeiJing time Apr 23rd GMT+8.
The 3rd Batch of AntMiner S2 will be shipped out starting from April 26th. AntMiner S2 will be available in the global market for a price of $3,199.

Coupon for Returning Customers:
Only $3,099 after a $100 Instant Coupon, which will be released to the user IDs who have bought S2 in the Batch 1 & Batch 2.



AntMiner S2 SPEC:
 
 Hash rate: 1,000GH/s
 Power consumption: less than 1,100W from the wall
 Power efficiency: Around 1.1Watt/GH/s
 PSU: 1050W produced by Enermax, 80PLUS gold
 4U Rack (442mm * 432mm * 177mm)
 Built-in 1050W PSU
 Plug and Mining
 Stable and quietly
 
Contact: [email protected]
URL: https://www.bitmaintech.com

Does anyone have the PCB design sheets for these new boards like we have for the S1?

Respect if somebody find a way how to overclock them.... 

If you are using the stock 1kw Psu then it's probably lack of power, but it's not a good idea to do such big jumps in click rate when overclocking anyway. Take it slow and incremental.

You mean OC not profitable?

I set frequency to 250Mhz and after reboot it make long beep. What does it means? Lack of power or too high frequency ?

1) You'll only need to flash the firmware if it's older than "Thu Apr 10 19:08:42 CST 2014". My batch 2 unit came with the latest firmware already installed. I would suggest making a backup SD card though, in case it does corrupt the one in there with a power down. I suggest doing it with your own image, once you've changed all the settings and have the pools set up or you'll have to do that each time you insert a backup card. I've not needed to reflash the sd card yet, but I've been using the suggested method of ejecting it before powering down and that seems to work very well.

2) I'm sure the overclocking is much the same as the S1 as I remember reading earlier on. It's just that the file is now "asic-freq.conf" and is in a different location (no time to search the thread history).

3) I would expect the hex codes to be the same as the S1 as they use the same chip. The initial clocks are 196Mhz.

4) I'm not sure about the stock fans with OC, but they seem to handle the standard clock speeds ok. Mine are running at 1920rpm, with the hottest board furthest from the psu running at 48^oC, ambient around 20^oC and case closed.

I had trouble with smashed innards, a broken off reducer/capacitor and a missing resistor, but with a little ingenuity and silver conductive paint, I'm hashing at 1Th/s now and it's been stable overnight

An OC to 225MHz shows 1147GH/s on the miner, but less than 1,000GH/s at the pool, basically the HW errors are so much higher you get a lower effective speed at the pool. Hoping the community can figure this out, maybe a firmware update or a more optimized CGminer.

I know it was talked about earlier in the thread - but I have not been frequesnt the last few days and am planning to visit my S2 for the first time tomorrow morning.

1) Should I reflash the firmware of the unit AND/OR copy a new version of the SD card?  (I saw an SD image posted a few days ago)

2) I am changing to a 2kW server PSU and want to see what sort of overclocking is available.  How can I change the clocks? I saw several posts indicating that the unit clears the settings at a reboot, so when changing the clocks you have to start/stop the cgminer only.  Can someone post the code for that (using putty SSH and I have experience with S1)

3) overclocking, the hex codes are the same as were listed in the U1 documentation?  https://coinreport.net/overclock-antminer-u1-guide/  is correct?  (the initial clocks are 160-170MHz right? I would be aiming to 212-225MHz to start.

4) overclocking, do the stock fans get fast enough to handle it, or will I need to pull the top off and add a pair of 230mm fans to increase flow? I could run the PSU outside the case to lessen the heat created

The S2 has a total of 5 fans, but the motherboard has 6 places to connect a fan.  Only fans 1-4 are monitored by the Web GUI.  So, when the factory banged out hundreds of S2's in a short period of time, guess what happens....

All 3 of my S2's have their fans connected differently.  I don't have the problem you describe, but perhaps it happens if two of your main fans are connected to plugs 5 and 6 rather than 1-4?

Hi, does anyone know how to reset fan control on the S2?

I have recently purchased two Antminer S2 units. One of the unit is working perfectly but I have a problem with the second unit running the fans at full speed all the time.

In the miner web interface I can see that the Fan 1 is showing 0 instead of the fans rpm but the fan is working at full speed ( all the other fans are working also ) but it wont adjust speed  to control the fan loudness.

On the other unit everything is working good and Fan 1 is showing rpm.

I tried unplug and replug the fan on the board but it is still the same fans are running at maximum speed all the time. I tried upgrading firmware ( succedeed without problem ) , I also tried a hard reset but it has changed nothing.

This is very loud and consuming.

I guess it is related with the firware but upgrading didnt help.

Is there any way to adjust / control / reset the fan control?

I could not resurrect my dead PSU and emailed Bitmain, a day later a replacement PSU is on its way with tracking numbers etc. I am returning the dead PSU at their expense too, I had kind of expected to pay for that myself so that was a nice surprise.
 

Well one arrived today after floating around in UPS limbo for a week. Surprisingly just the mainboard and one blade were dislodged, but I removed every blade, wiped off the excess TIM from around the heatsink and any spills of TIM on the chip side of the blades, plugged it all back in, noticed there was a pcie power cable unplugged, started her up and whoosh. 1.075TH. Similar experience to the S1's that have passed through my hands. Nice one Bitmain. 

Well my RMA'd board that was bad is on its way back from China. It will take a little bit boys, but they will handle it.

I've just found one of my boards is missing a little yellow capacitor too, but it was still hashing without it, my cat found it lying at the bottom of the box. HW errors were looking a little high and I think this has brought them down slightly.

I've also found that my main problem is not the pci connections on the backplane, I have those all working now, it's actually one of the boards. It's missing the tiny resistor that's closest to the pci connection which has a "0" on it and that stops it from hashing, the board shows up in the gui, but won't hash.

That was when I was unpacking the miner already, so nothing I could do. If I listened to that clicking noise before of course I wouldn't accpet the package.


That is a nice question. I looked at every board for not connecting the one with the missing capacitator when I was pluging them in but all look fine. I will take a closer look now as bitmain has told me to send that board back. That is again 20-25 days without that board and they have said nothing about sending me the destroyed holder of the box 

I had the same sinking feeling when I heard the death rattle from the box

How exactly did you get it running at 1.1Th/s with a missing capacitor?

I am not sure if I would accept that when received.