Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 239. (Read 531298 times)

I do that.

I have purchased 3 coins over the last week.
I have some coins I am holding already.
I could buy 3 more coins and use them to hold rather then get one more s9.

I kind of feel I need to get one more s9 and I am hoping for a price spike on the three coins I just purchased to shift up a bit in price. Kind of just a bit twitchy .

@mettalmag,

Cooler the better

Also, if you noticed, no drop into pool1 or pool2 = good internet connection be recommended

I know this questions was asked millions and millions of times, but I need help with my farm.
The first one is about temperatures of course, on Bitmains official webpage I red that the chips shouldn't go above 115C, but I haven't found anywhere anything saying that some temperatures are normal some are fatal, can you please help me with this ?
first pic shows the miner on frequency 500 and the second on 600. What is the optimal temperature to mine on frequency 600 ?
I.

II.


And the last question is about one of my S9s. All three boards are working properly only on frequency 100 (I checked almost every frequency to 600). When I change freq to 100 and above miner status shows this:

If I can fix it myself that would be great, if not I have to send the faulty board back (if it is faulty) to Bitmain warranty.

lots of probs but still sold out heh ...

I'd like to add that one thing to notice is that my miner had 2pcs V3 (version 3) hash boards and 1 piece V1 hash board.
The low hash rate -problem was with the V1 hash board.

can we install S9 550 to S9 600 default firmware?

Mine looks nearly identical except the freq is lower.  Top board has the highest hashrate, middle board is close to it but slightly less, and bottom board (which is also chain 4) is always atleast 100 GH/s less than the top board.  And that's what I get when I get a good boot which sometimes takes several reboots to achieve.

This happened to me as well and I almost gave up on restarting the miner.
When I now finally got it back to the normal hash rate, I'm avoiding any restarts etc. with it.

edit: This is how it looks like for me at the moment. The problem was with chain#4 board and it is still hashing with little lower hash rate than the other two boards. The total hash rate is little under what it suppose to be (12.93Th/s).
(click for bigger picture)

S9 owners all need to ssh into your machines.  Load up ck pool/Kano in first pool   Nice hash as second and f2pool as third.  Think I found a way to replicate a bug every time you restart cg(BM)miner. With those pools on setup page It will set the network diff at first to 226g then it looks at second pool which is nice hash and it then sets the network diff to 54k. Then miner will get shitload of rejects because the POS thinks it's finding blocks one after another.  What I have found is I've waited up to fifteen min for it to self correct and it never does.  So for pools out their that have s9 pointed at them that's why they keep trying to submit false blocks.  Bitmain sure has their hands full with this one. So for those of you mining solo with these you need to verify that your cgminer is running correctly.

Putty into s9
Root admin
Type screen -r press enter. Now check the network diff is correct.  If you want to watch the initial sequence when it starts up then have the pools page open on s9 and ssh window open.  Have the screen -r command ready at the prompt. Press save on miner pool page and then immediately Goto putty and press enter if it says it can't find then press up arrow and enter again until it shows output of bmminer.

What I did to end my headaches was to only put a pool in first slot. Can't have any backup pools. 

BR
d57heinz

I have this exact problem with a batch 3.   I installed the low voltage firmware which seemed to help slightly (fewer restarts needed to get the 3rd board to hash normal speed) and I also downclocked which also helps in the same way.  But I still sometimes need 4 or 5 restarts to get it working right and even then that low hash board always hashes less than the other two.  This miner has been this way from the day I got it.  I have spent 20+ restarts trying to get it to hash normal at full freq before but I don't even try anymore.

Has anybody had problems with low hash rate in one board with S9, batch 2?
That particular board hashes about 2.5-2.9Th/s.
I had this problem once before but it went away after few restarts.
Now I'm stuck with the one board performing at low level.

Ideas?

No x's are shown in ASIC status.
Firmware is original.
edit: I was able to fix this back to normal after all.
It required maybe like 30+ restarts.
What a strangely acting miner..

Meh.  Glad to see the option but too expensive.  Three-hundred extra for a 180 day warranty is kind of obnoxious.  I hope that isn't an indication of what they think about the reliability of their own product.

They now offer

3 day doa
90 day
180 day
1 year

All at bitmainwarranty plus PayPal is allowed.

This is a huge concern. I had that happen to an S7 and it's the reason I held off buying an S9 to begin with. Next was the price. When all the reports of hash board failures began appearing, I was glad that I held off. 

Bitmain Warranty was good too me with my S7 issue...but eventually the warranty ran out and the rig became a permanent 2 blade S7. The rig will be a year old in a week. It has spent 50+% of the past year running on 2 blades.

Yeah.  I can't buy more unless I get a better warranty.

I have been told this may happen.
 Pay a premium for six month warranty will be offered soon.

The biggest issue with the S9 and all of these projections is the possibility you could be running at 66% (or god forbid 33% or broken altogether) before that year is out which I know goes back to the whole warranty point.  I have more than enough BTC to buy more and I have an S7 that I could replace with an S9 but I am way too leery of a hardware failure.  I need 2.15 BTC still to break even on the first two S9's so buying another and hoping I don't see a board failure before I mine back that much BTC is just too big of a gamble.  If these things showed a higher degree of dependability I probably would have already bought a third one.

 yes of course they can do that.

 It goes without saying they could  sell these s9's at 800 usd  and the diff can be made to jump from 225 to 250 to 300 to 400.

They have full and total control of the market  in terms of gear and they can dictate which way to play the game.
Slow supply high price is what I prefer them to do.
My cheap power has about 15kwatt cap. So high priced s9's work for me.
As an aside it also helps my in house gpu miners.

There is a downside to flooding market with cheap s9's  it drives up their cost of self mining.

Let pick a ph for bitmaintech self mining 120ph of s'9s at 3 cent power .

so look what happens if bitmaintech keeps growth at 8% and at 3%

on day 380 at 8% profit is    427,000
on day 380 at 3% profit is 1,255,000

they need new gear if growth is 8%  and power is 3 cents.

they need not switch out gear if growth is 3% and power is 3 cents.

they control diff growth  right now since they can sell cheaper.

but they have 0 need to sell cheap.

they are far far far far better off with high price.

and if they give the one year warranty they can sell at high price.

if you look you will see I used 500 as the price for an s9 since I think they can build one and install it in their mines for 500.

That's exactly the point I made in the R4 thread. How can it be designed and aimed at the "home miner" when the price was near enough an S9. It would've made more sense to buy an S9 and underclock it but still have the option to run it higher if electricity costs allowed.

Anyway I digress from this thread. The new Batch 14 S9 is $7 cheaper than the R4 was on sale for.