Re: Ethereum mining still profitable?

you can use the nano mod of that guy in this forum, he mine with 75watt and 22 mega i remember, pretty good, i still need to see that super efficiency of other amd, it's strange that they cna match nvidia, like the 390 for example

If you under volt the R9 390 to less than 1000 mV, you can get around 6 J/MH, that is better than 970.

proof of that, my 970 do 22 mega for 160w, i doubt a 390 can beat this

I have both 970 and 390, for ethereum mining I would choose 390 over 970.

why? i also have the 970 and i think it's a great card for etheruem it match any amd card out there, and now you can find it for $230 on the web, very cheap

Because a under volted 390 consumes 167 watts and hashes at 27 mh and you can buy it new instead of second hand giving you a warranty. Why would you want a 970 instead?