The Gamma uses the same chip as the s21 pro and therefore gets roughly the same 15 J/TH efficiency. However the s21 pro is 195x as powerful. So you'd need 195 gammas to equate to the hashpower of 1 s21 pro. That would be $32k worth of gammas to reach the hashpower of a single s21 pro that you could buy for $4k. 

Tldr nah wouldn't be worth it 

 😂 thanks for talking me off the ledge. I actually found much cheaper options for running small boards in clusters if I decide to build the micro farm.  

 Haha np! If it's purely like a nerdy learning type of thing (which I love 😁) then all for it. But if the goal is to actually earn some sats, there are much more efficient routes