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.
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.
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.
