Neoseeker tried the ECS Z270-Lightsaber
A quote from the article:
The ECS Z270-Lightsaber is a high end motherboard designed for Intel's Kaby Lake CPUs. It's loaded with features like a 14-phase power design, multi-GPU support for up to three graphics cards, and supports a Killer E2500 gigabit NIC. As you can see, overclockers and gamers will want to take note of this offering!ECS Z270-Lightsaber Review @ Neoseeker