ASUS Crosshair V Formula - 2nd Slot stuck at @x1! No 3-way SLI!

[heatshiver]

I finally got a 3rd GTX 480 for 3-way SLI on my Crosshair V Formula. For some reason I just couldn't get 3-way SLI to show up on NVIDIA Settings. The third card (2nd slot) wants to be dedicated to just Physx...

I tested all the video cards separately and in 2-way SLI, each successfully. I even did some repasting to get better temps to no avail. My PSU is more than sufficient, and I am running Windows 7 x64.

I finally checked out GPU-Z and saw that the second slot was running at @x1! I read a few threads where this problem has occurred for others, and found a list of solutions to try that did not work.

My last attempt will be to try HyperSLI just to see if it does anything at all (with a Restore Point ready).

Any ideas or suggestions? I have sent a technical support email to ASUS, but have not heard back from them...

 

[alexoiu]

Hi, Single card in second slot runs at x1?

 

[heatshiver]

Not sure. Will give it a shot and report back.

 

[c3llz]

I have 2 way SLI on this motherboard and first time I installed the 2nd card I found that you use the top slot for the main card then not the 2nd slot but the 3rd for the 2nd card,
And then read that if I was using a 3rd card I would then put it on the bottom slot,
look at the 3way SLI cable, and it should show that 2 cards are closer together while the top card has breathing room, It also depends on how fat your cards are