is it worth to make an rig next month? i pay about 0.08 cents per kw/h
$0.08 /kWh is good price. If you buy the 6x R9 390 and a mother board with 6 PCIE slots, you might ROI.
if $0.08 /KWH is good then $0.0439 / KWH (what i just started paying) must be killer. should i build a rig since mine electric is so cheap? i judt bought an Asus r9 390 strix to get started...sorry to hijack the thread.
For the mining, it is better to buy the cheap R9 390 with few fans. The fans use power. I have $0.2 eletricty, so I have to under volt and under clock, they use less energy, so fan is less important.