I don't want to know why you're using 2750w worth of power for that machine, presumably you're a miner using riser cards, and as the CPU is a Celeron and that is a popular miners board, but that motherboard is only designed for a single graphics card, and GPUs must be installed in a certain order. I would suggest asking in a mining oriented forum for instructions.
wait what? 24 gb of Gpu with 8gb of physical ram is this what we are doing? 8 pin power and i do see a 4 pin hot plug at the top but. i get it but i dont get it..