ASUS P9X79 Intel X79 Soket 2011 DDR3 2400MHz (O.C.) SATA 3.0 Usb 3.0
SAPPHIRE R9 290 TRI-X, 4 GB, PCIExp, DDR5, 512 bit, 1000/5200
EVGA SuperNOVA 1300 G2 1300W 80+ GOLD
Windows 7 64 bit with sp1
So i added one more of the same graphics card. Thought it would be easy like plug n' play but couldn't make it work.
What i've done till now.
-The card is installed and the power is connected, the fans are turning i checked.
-Tried both the cards on the top slot, they work fine alone
-Updated BIOS to the latest version
-Uninstalled and installed graphics card driver with display driver uninstaller
-On the windows device manager or gpu-z second graphics card is not shown
I don't know what i'm missing. I'm pretty sure there must be a setting on the BIOS but the menus are really simple and i couldn't see an option. Tried to change the PCI link speed to GEN1, GEN2, GEN3, nothing happened.