Hello Everyone.
It is 2 months since I have started mining ( 30 pcs of M3 ), now I am planning to add more 15 miners I narrowed down my choices regarding to my circumstances and result is: s9j or Avalon 851.
now I had some questions I will be happy if u can help me about their quality and performance ? ( without considering cost of electricity and miners price - I have done it my self just need some technical info )
1) which one of mentioned miners is more durable and reliable technically with less break down probability ? (I heard that s9 after few months face some problems like drop in the hashrate )
2) If you have used any of them please share your own experience ?
3) generally which one do u suggest and why ?
For efficiency go with S9 with
Braiins OS. The Avalons are less efficient, AND more finicky, AND require more effort setting (extra wiring, etc).
Obviously if you under-clock the S9 for maximum efficiency, it will probably last longer too. It is possible to downclock the Avalon as well, but its simply less efficient.
Since you mention M3s, i wonder why you haven't considered the M10, M20 and M21? Since you are already familiar with MicroBT...