ok.
well i bought and then used the CX650M with skylake 6700 cpu and 1060 gpu, everythink was fine and working.
i had another pc with 8600K cpu and 1080ti fe gpu. it had other seasonic 850w psu. someone wanted to buy the pc with the z370 mobo and 8600k cpu and 1080ti fe from me and i thought the 850w psu is too much for that pc so i changed the psu to my CX650M. then after i finished changing psu i tried to power it up and the Z370 motherboard started smoking. the 1080ti fe was spinning like crazy and the led on the gpu flickered like something is shorting. i got scared and pulled the power out of the wall and in result the CX650M psu, Z370 mobo and 8600k cpu died. is this detailed enough? there is no way i connected something wrong because i'm always double check if everything is connected correctly.