I am planning for 2 x S9 purchase
just having a doubt, few are saying that mining wont be profitable after halving
Is it true?
Most profit depends on your expenses. Like your electricity cost? Are you running it in your house, if so its going to be hot and you may need more cooling, etc etc. But I still think its profitable. I just purchased my first S9 and plan to get more soon. The efficiency is there and I am in a good spot for electricity.
Does AC is required for more cooling or table fan would be enough for 2 x S9?
Planning to run it for 24x7
The S9 B3 I have seems to run a couple degrees cooler than my S7's in the same environment, keep in mind the S9's also use a 6000RPM fan on the front so they can certainly be louder.
They will often grey out the button if the USD/BTC/CNY price moves too much, and will update the price multiple times daily if necessary.
You are probably right they are sold out, still took longer to sell them than I would have expected. Hopefully this means the batch 6's will have another decent drop in price.
Do you really see the price drop ?
Batch 4 12.93 TH/s 3.05 BTC
Batch 5 11.85 TH/s 2.77 BTC
Yup, 2.77 is definitely less than 3.05. Never said it was a better
value.