would be interesting to see some stats of h/s per Watt for various cpu's

I'm seeing
100 watts - i7 4770 - 3.3 hpm . . . so 30 watts per hpm - there's probably a better unit to use.
Hashes per kilowatt maybe . . .
So I use 1KW in 10 hours. in 10 hours I get 3.3X60X10 hashes -
1980 hashes per KW