No idea why people are still mining ZEC with their 470/480. Basically throwing $0.15-$0.20 daily per card away in profits.
on top of that i can run more ZEC rigs than eth rigs the power savings is that good so it evens out in the end
What? There is no evening out of anything. If you have 470 or 480 cards, you are making more PROFIT (factoring in power consumption) by switching to ETH.
i have 4 extra rigs that i could not fit into my circuits when i was mining eth , the power savings from zec to eth is closer to 20% for me at least with 100mv undervolt on all cards
If i was mining eth those 4 rigs would be shut down right now gathering dust
Sounds to me like your neighbor would greatly appreciate you paying for his electricity (in return for housing the rigs at his place)