Same risers, same positions for all of the 6th. But I did change the riser on the 7th once the first one was fried. Also, how can a riser, cause such havoc?
it is a dead short trust me.
I killed the slot the gpu and the psu when I did it. My guess is I had a 750 watt psu and you have a beast to do 7 gpus so you feed it more juice and killed more gear.
I do smaller rigs and rarely bother with a lot of risers. Shorts are a big reason and my double cataract repaired eye are okay but not great for depth perception and close up stuff.