For those with rigs, what is your effective cost per 1mH/s?

Mining
1

Nothing here right now

2

These calculations are pointless now because mining software is still under development.

Currently for me the older 7970/280x are a better deal since they hash at the same speed as the 470 while being cheaper.

Both GPUs pull VERY little power.

4

The 470/480 are the GPUs to get but your current calculations wont be accurate in the future.