7970 Working as PCI-E 3.0 x16 @ x8 1.1 ?

[johnmaylives]

Hello,

I have Asus Rampage IV Extreme motherboard and XFX 7970 Black Edition O.C. graphic card.

GPU-Z Screen;



Can someone help me about this situation ? How to enable PCI-E 3.0 @ x16 ? And why asus rampage iv extreme 1st slot working as x8 ? it should be x16.

Also My system is:

Here is my system:

Intel i7-3960x 3.3Ghz
G.Skill 16GB (4x4) RipjawsZ 1866MHz CL9 1.5V Quad-Channel
Asus Rampage IV Extreme X79
2x OCZ Vertex 3 120 GB (RAID 0)
Cooler-Master Silent Pro 80+ Gold 1200w
Corsair H80 Cooler
XFX 7970 Black Edition O.C

Thank you.