Are You guys on windows 7 with those 8th gpu problems? It won't work... You need win10 or linux.
Sure mate Win10 x64 EnterpriseMy problem is not 8th GPU: it's the 5th card that makes my rig enter boot loop ONLY when one of those 5 cards is connected to 16x slot!
So if I skip the 16x slot I can add and run 7 cards easy and clean...Weird
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