If you are setting up a number of new systems, you may want to calculate if the annual power savings on lower power RX480 boards makes up for the cost of buying more systems compared to building machines with R9 Fury. If you are less than $0.10 per kwhr getting the R9 Fury's works better for Zcash.

You need to test the power from the wall on both types of systems, compare it to the hash rate, and make the calculations.

See my testing and calculations here:
https://blockoperations.com/zcash-miner-watts-amd-fury9-rx480-using-claymore-11-1-linux/