Tried using the software yesterday, and something definitely happens! Tried setting higher voltage, but card starts to downclock under load with Pwr perfcap reason. I'm using modded stock bios with custom boost table and 350W power limit (higher seems to not work anyway because maybe of hw lock). Also tried flashing Matrix LN2 Bios t4s, and Pwr is gone, but the card started crashing under heavy loads, no matter what voltage i set. My default oc is 1470@1.212 , i've tried 1510 @ 1.25 and it still crashes. I'll try to measure actual voltage this weekend.