Quote from: fran2k on September 30, 2016, 02:09:27 PM

https://ufile.io/d97

Sorry, i missed your roms, but now i testet them and here are results:
my rom is taking 155 watt from wall and doind 25MH (155w-25w=130 watt card only)
your 1850 mod is taking 160 watt from wall and doing 25,5MH (150w-25w=135 watt card only) (i set core speed to 950)
your 1950 mod is taking 185 watt from wall and doing 27MH (185-25w=160 watt card only) (your max core speed)
Anyway its still not those 100-110 watts i was hoping for Tongue

Meaby linux is setting own voltage values ? or amd driver under linux is more power consuming ?
Any thoughts ?

Edit:
With my bios and tuning it to 950/1950 i achieved 27MH at 170 watt from wall (170w-25=145w card only)

ANYWAY I TESTED SOMETHING
I put in my bios volts like 730 in all core states and 800 in all memory states.
I also made second bios and put 1000mv in all core and 100 in all memory tables.
And guess what ? The power usage in both bioses is exactly the same

Magick of linux Tongue

Anyway Polarisbios editing undervolting doesnt work on linux.
I assuge that @fran2k - you made offset voltage ?
So it isnt working neither Sad

Meaby Amd just blocked undervolting under linux and there is no possibility to get undervolting ?
And meaby i just need to go not for power efficiency but meaby hash rate (at least when its ethereum mining profitable)
But when the dark times will come - only undervolted cards will be profitable.
And i really dont want to use windows because it is really hard to manage many rigs at once on windows...