12x Vega 56 Rig = 24KHs cryptonight = 500MHs ETH / 1800W = 120 electricity month (10cents/kwh)
6x Vega 7 = maybe 24KHs cryptonight = +-600MHs ETH / +-900W?! = 60 electricity month (10cents/kwh)
prices
sell 12x Vega 56 = 2700
buy 6x Vega 7 = 4500
------------------------------------
switch to vega 7 = 1800
60 less electricity / month = 30 months to equal
mhhhhhh.....
10x Rx 570 = $700 - $850USD (300Mhs, 1000W)
Vega 7 = $700 USD (Best case 120Mh/s, 200W)
Looking at ETH alone, polaris cards on firesale is just too good to pass up. Any surviving miner with low cost should go for used polaris cards. Like how they should go S9s for $150 w psu instead of S15s for $1k.
Only worth considering if Vega 7 = 2x Vega 56 in cryptonight, and cryptonight profitability makes a comeback. I still want one though because I'm irrational.