Ah its just i had not good day, so i let it, i didnt want to make speech fight. Actually i wasnt even sure if i should return the card, because microstuttering isnt so annoying as with GTX460 1Gb from Gigabyte, but its there. And with my luck i think with next card there would be again some problem, and almost 900Mhz core clock (OCCT error free) is for me really good score. Usually people say how easily they putted theyr 460s to 900Mhz, i believe it, but show me OCCT errors, and i bet you will see pretty high numbers. I tried even 910Mhz and even with errors in OCCT, Vantage worked perfectly with (P) GPU score 17,700 and Furmark too. But its about feeling, again stable = OCCT 100% error free.
So actually i said to myself, i will return it if there will be no problem with shop, and if there will be some problem i will keep it.
The sound seems strange to me, its not classical beeping sound from cards, its more like buzzing, but it goes from card, iam sure about it. I tried to remove PSU and HDD before and the sound was from card. I cant almost hear it from 50% fan speed, but still its there in some parts of games or benchmarks. Vsync didnt helped with it.
And to voltage, i thing that Afterburner 1.6.1 is reading it relativelly good. As i said, if i put in Afterburner 1.6.1 voltage to 1.087 i can reach core clock without OCCT errors 895Mhz, with 2.0.1 i can reach "only" 890Mhz. Interesting thing is, when i let my OC profile from 1.6.1 with voltage 1.087, uninstall it and install 2.0.1, the GPU-Z still reads 1.087, will try tomorrow the OCCT test like this with 895mhz. Iam really curious about it.
EDIT: I was just thinking, if 1.087 will really stay on card, so with next 100 it should be really nice score or card RIP...
But i dont think so, still 1.187 voltage should be really interesting.