Customer has 4x GTX 690 in 7047GR-TRF. Only 2 are found. The other 2 are not recognized. We tried everything without result. Any combination of the 4 cards, only 2 will work at the same time. He is now using X9DRGQF_t8132 bios. These are dual GPU cards, so 4 cards are 8 GPU's.
Please contact graphic card manufacturer to download the latest firmware.