On stock they do 20-21 MH/s and whatever I do, either the cards crash or the hashrate goes down. Tried mem-strapping, upping the powerlimit, changing the memclock, etc.. Just a note, when you look at the Bios it is an E2 instead of the E1 we had on older cards..
Show cooler - cools only the core, and everything else (including GDDR5) cooks.
I made progress. Close to 27 mh/s per card (with dual mining, but low DCRI) with temps around 60 degrees celcius (Fanspeed 70%). Guess time to learn how to set all the Afterburning settings into the bios so I can swap some rigs over to linux. After the bios mod only 4 cards work in one pc.
What did you change? I have the same card with 5E2 bios.