Hello, thank for your response.
From the PCB Photo of GIGABYTE GeForce GTX 1080 WindForce OC 8G 8GB, it looks nearly the same as the PCB as BP-WBV1080G1-RGB, which you can compare them from the installation. So we think the block should be compatible with the card GIGABYTE GeForce GTX 1080 WindForce OC 8G 8GB.