Thanks a lot, for you guide.
I tryied to do it step by step. Three times. But had no succsesfull.
First difference is - after install Ubuntu (ubuntu-16.04.2-desktop-amd64), when I enable nvidia driver first time, I already have last version of nvidia drivers. I can't install  367.57 . Is it ok?
After install nvidia drivers I can open nvidia settings, but i don't know where to do to "And X Server Configuration and save the configuration file. " I tryed to reboot and after that I can see temps, fans rpm, clock of gpu's.
So then, when I disabled nvidia driver and enabled Nouveau driver, I start to install last nvidia driver one more time. One time I had error that because of enabled Nouveau driver, it can not install nvidia drivers. Is my job right?
After succesfull instalation cuda (without drivers) I tryed to overclock gpu, and have a lot of eerors. Failed to connect to Mir: Failed to connect to server socket: No such file or directory. Unable to init server: Could not connect: Connection refused. I tryed to install mir, but it was a bad idea.
What am I doing wrong? Can you give me some help?