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The Gigabyte 1070 ITX cooler handles full load quietly at around 50% fan power keeping temps under 82C with full boost. But I think the extra 100w of a 1080Ti would push it up to 100% fan power which is very noisy.The MSI 1070 Aero ITX cooler on the other hand seems to be around 10C cooler than the Gigabyte for the same fan speeds (from reviews I've read), so perhaps that would be a more suitable cooler to try out.
The Gigabyte 1070 ITX cooler handles full load quietly at around 50% fan power keeping temps under 82C with full boost. But I think the extra 100w of a 1080Ti would push it up to 100% fan power which is very noisy.
The MSI 1070 Aero ITX cooler on the other hand seems to be around 10C cooler than the Gigabyte for the same fan speeds (from reviews I've read), so perhaps that would be a more suitable cooler to try out.