Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 316. (Read 531168 times)

The jump in price works against B1 buyers just as much as it works for them, since to buy batch 1 you had to buy BTC at about 30% less than it's going for now. So someone buying a later unit for the same USD would have to mine back about 30% less coin to break even, which because of diminishing returns from diff increases will mean breakeven more than 30% faster.

S9 is not working in Nicehash

Frankly, when I first ran the numbers for the S9 there was no way they were going to see ROI in any kind of reasonable time frame.  Now with big spike in BTC prior to halving these guys that jumped on B1 are looking like they may have a shot at ROI in a year.  It all depends on prices continuing to go their way.  Right now it is looking a LOT better than it did when they ordered them.   So the big gamblers it may pay off for them.  Time to grab the popcorn and watch... I know the BTC price is making me wish I had gambled a little... LOL

1. no when the unit loses internet for long periods of time (seems random...sometimes minutes and other times almost an hour sometimes never) the fans spin down to a slow slow rpm. i have seen it happen in every miner since the s5 was released so its not something im making up. all of the miners since the s5 are set to hash locally when the network drops.....bitmain told me this. they said it discards the shares over and over and its supposed to stop but it doesn't. only the fans stop which is when temps spike and can be dangerous.

2. 8-12 months is too long since new miners come out before the old ones break even. if and only if the diff stays the same will these break even if they last that long. but we both know the diff wont stay the same. i say the diff because the diff will raise along with the price so while you can mine for a couple of weeks at what looks like an awesome profit once the halving happens your roi will quickly tank.

3. yes you can sell your miners on and make a few bucks back but i don't recall the name of the game being lets break even....you invest to make money not lose it or get back what you put in a year later. also if you think ur miner will be worth 1300 almost a year from now then idk what to say.....the price of btc will have to soar and soar to break even and make this purchase worth while. I hope that does happen for all of your sakes but the reward vs the risk isnt good enough to jump in like u guys did.

4. running them at home in the summertime will cost you more than it would in the winter. power prices r higher in the summer per kwh and the cost to run an air conditioner is higher than running a heat pump (we have heatpumps mostly here and gas heating) so that will hurt your roi times as well. just calculating the cost of the power just to run it isnt the right way to go about calculating the cost to run the miner in the summer.

If you set fans on manual at 75%  the internet goes out but the fans run so  no burnout.

Buying miners vs buy and hold is a very complex comparison for roi.  Depends on many factors.

As for everything staying the same (diff,price,etc)  yeah  you are correct  8 to 12 months for breakeven.

I have cheap power so I break even on Feb 14th 2017.  if units drop 70% in price  my 2 batch 1's sell for 1300  and I make a 1300 profit I also get free heat from

OCT 1 to FEB 14 about 9000 btus 24/7  So  I see quite a few reasons take my chances with with them.

only silly people don't care about ROI! lol. good thing hes an animal i suppose.

Honeybadger doesn't give a fuck about ROI 

front fan was running at 4400 rpm at 100%. swapped in the rear fan from an s7 which normally running 46-4800 on an s7. So running at 4400 is no problem. fan is running and stays at 4400.

now if you were trying to use a front fan on the rear which normally spins faster then yes there may be a problem but rear to front is ok

the fan speeds aren't the same for both fans. one is supposed to spin faster than the other if im not mistaken so swapping the fans will mess up the miners ability to push/pull the air out of it.

i had the howler issue as well from the fan. it seems to be a front fan from an s7 with a longer pigtail attached to it. So i took the rear fan off an s7 and used that on the front and all is quite now in the house.

im blown away by the number of people paying these ridiculous numbers for miners that wont ROI in 6 months or less. I saw an article saying the S9 was an amazing investment and they even said if everything stays the same (diff, price, etc) then it will break even in a little over a year.....a year!?!?! how is this a good investment guys?? just wait until halving.....the price will need to drop otherwise they wont sell any miners. if the temp numbers people are throwing out there are true how can you expect these things to even last a whole year?? 70c at under clocked speeds is just too effin hot! running my s7's at a lower fan speed but still at full speed doesn't make my temps go this high....if they have the same issue the s5's and above have with burning themselves up once internet goes down for extended periods of time you all r gonna be screwed.

So, I'm running an S9 inside my home (yes, I'm crazy). With the default settings, the fan was unbearably loud. It was just unmanageable. I tried the vent filter trick, and while it cut down the train whistle sound, it also caused a deep echo effect sound to come out, actually increasing the miner's overall volume substantially. I had to take it off.

So, I took advantage of the "max fan speed" setting in the config, and I set it to 40%. At that speed, the fan noise can't be heard through a closed door. Obviously, that's not enough to cool the miner running at full tilt, so I also downclocked the miner to 475 and let it run for an hour or two, then gradually increased the clock rating to ensure it doesn't overheat. Currently I'm clocked at 550MHz, and the temps are about 70-ish for the board and 100-ish for the chips. At present it's hashing at about 11.8 GH/s.  I can probably clock it up another 25MHz or so before it starts throttling. 

Just wanted to throw this out there in case there are other home miners interested in running the S9!

When they realized that their miners weren't hitting 14TH reliable they probably did a bit of testing, and Batch 3 are Batch 1 miners binned for lower speeds.

Yes, it could just be all about money.
So it basically could be the same production batch, but those who are willing to pay more are on the VIP list a.k.a. Batch 3 .

Not really, Batch 2 buyers paid less than Batch 3. More than likely they finished production early and are offering to ship immediately for an extra $100 or you save $100 and they begin shipping on June 20th how the original listings terms stated.

ref: https://bitcointalksearch.org/topic/m.15229543

Kind of weird strategy from Bitmain to ship Batch 3 before Batch 2..
Can't really enjoy it as Batch 2 -buyer..

My s9 seems to run hot. Pcb 68-72 and chips 98-102.

What are others seeing for normal temps for batch 1s.

Got notice last night from Bitmain that my b3 has shipped. Literally about 7hrs after they confirmed payment. 

just got my notification from bmt, b3 shipping, should be here in a couple of days.