NEW PC with i7 series

[MiRai]

ASUS GeForce GTX 1060 6GB ROG STRIX OC Edition VR Ready HDMI 2.0 DP 1.4 Graphic Card (STRIX-GTX1060-O6G-GAMING)

That's a downgrade. If you simply overclock the 980 Ti you will most likely be on par with a GTX 1070, minus 2GB of VRAM.

Corsair Vengeance RGB LED 32GB (4x8GB) DDR4 3000 (PC4-24000) C15 for DDR4 Systems PC Memory (CMR32GX4M4C3000C15)

Is this the same RAM you have now? If not, can't you just move over the DDR4 you currently have and save some money? Also, 20 game clients at 1.5-2GB of RAM each plus the operating system is likely going to exceed 32GB.

The new MOBO has 8 Memory RAM slots thats why I choose 4x8GB instead of 2x16GB for now as later If i want to get 64 GB i can get another 4x8GB

The main reason you wouldn't want to go with 2x16GB is because the CPU benefits from quad-channel memory, which requires one DIMM in each channel to be populated in order to work correctly. Otherwise, you'd only be running in dual-channel.

Did anyone already tested the new CPU's this or simillar models ?

I doubt anyone has had the chance to extensively test one of these CPUs at this time (in our world), since they were just released two weeks ago and they don't have the most desirable price point at the moment. However, judging by benchmark reviews, it's safe to say that this generation is a little better than the last generation, and other than the GPU and RAM, I would guess that the system would as you expect it to.

Also, in the title, did you mean i9 or i7?