Yes guys as I stated I did look at the manual and bios, and as I wrote in the original message it's running slot 1 at x8 because it's sharing the bandwidth with slot 4 which is used up by the SSD, I just wanted to see if anyone has any real world evidence that a GTX 1080 still isn't very different with 8 lanes vs 16 lanes especially with modern games, that's all. Thank anyway.