Specifically, the Seasonic Prime 1200 and Seasonic Snow Silent 1050 PSUs come with 8+6 cables that aren’t meant to be used to power a 1080ti with 8+6 power plugs. The cable plugs match but the cables themselves don’t have a rating that is tested to power it. There is an explicit “do not use” page on the manual that comes with these PSUs that instructs to use two cables per 1080 ti due to their poor cable quality. These are Platinum rated PSUs as well, which makes me distrust anything that Seasonic comes out with now.