I just lost one of my motheboards due to the 1x - 16x extender. I awoke to one of my rigs stuck at bios giving a pre video error with a cosntant 6 beep. Did a bit of playing around and then ended up taking it down to the shop to see what was wrong. So the board is dead. Log shows a very long draw on the line for about 2 min with a drop in current then it zeroed across.
After running both the card and the cables on my meter, the cable was getting such random numbers I figured there has to be a short. Hooked up a second cable, fine, no problem. Back to the first. Super crazy voltage levels.
So lets see. Im out one workstation board here. 3 gpus are now sitting doing nothing, and I still dont know where the order I placed before the damn Mt Gox crash, but to be honest, I dont even want them if they are this bad.
Just thought you all should know
Did your adapter have the extra molex cable injected in the ribbon?
I wouldn't use one without it tbh.