Normal
Do you have a normal ITX board to test it?Maybe the PCIe Port is the problem.With no riser you have only 25W on thin itx and with your special powered riser you maybe have 75W but only if it work as expected. Some weeks ago I read an artical about the special powerdraws of the PCIe port on different gpus. If i remember right different gpu generations draw differen power values on 12V and 3,3V.
Do you have a normal ITX board to test it?
Maybe the PCIe Port is the problem.
With no riser you have only 25W on thin itx and with your special powered riser you maybe have 75W but only if it work as expected. Some weeks ago I read an artical about the special powerdraws of the PCIe port on different gpus. If i remember right different gpu generations draw differen power values on 12V and 3,3V.