I have Asrock ALiveNF5SLI-1394 That has three PCIE slots 1x16x and two 2x8x. The GPUs are 2xHD6670. I know that this motherboard is SLI only that is fine because I`m not trying to SLI them . I tried to boot the computer with both card inserted in to the yellow SLI intended slots and when I try to boot the computer it won`t display in any display out. The numlock lightsup on the keyboard and I can turn it on and off so is is like the computer is booting but without picture. Is it possible to get picture some how and both cards to be recognized in the os ? The purpose of this is to run bitcoin miner on both cards as far I know it is not needed the cards to be in CF because I can run separate mining process for both cards. Any help wold be very much appreciated!