Hi, I've reached a maximum 2114MHz initial frequency with power 112%, voltage 100% and fans at 100% (80% was OK too), GPU clock offset 125MHz (found that it jumps by every 25MHz, not by adding just a 24HMz more), memory clock offset +400MHz.
It starst at 2114MHz, but when it reaches about 60 degrees C, it lowers the voltage with the frequency - about after a 15 seconds it lowers to 2100MHz, than when the temps are at about 63C, it falls to 2088MHz and oscilating between 2077 and 2088MHz.
It finished stable the Firestrike and the Time Spy.
I tried to add another +200MHz on memory (+600MHz total), but I've got an artefacts and sort of flickering. Anything over the +400MHz wasn't possible, but it finished the tests with some slight bonus on score..
I'm posting also the screens with results from 3d mark tests, for the graphics score - CPU score is lower, I have a less powerfull CPU. But overclocking from 3300MHz to 3498MHz made a +500points to the score and about + 1-2FPS.
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