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Can't SLI

xolse
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Recently updated the bios on my x79 deluxe mb. After that my 2nd gpu wont run at x16 and would only go to x4.  Before I would have the option of enabling sli in nvidia settins but it wont allow me anymore. I've tried running other pcie slots at gen 1 and 2 but no avail.

no sli.png

i7-4930k - 2x Titan Blacks SLI - Asus X79 Deluxe - 4 x 8GB G.Skill Ripjaws - Silverstone ST1000P 1000w

 

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Never change a running system dude. 

Maybe there's an BIOS option where you can set the PCIE slot back to x16 mode. 

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I've been looking but i cant find any option

i7-4930k - 2x Titan Blacks SLI - Asus X79 Deluxe - 4 x 8GB G.Skill Ripjaws - Silverstone ST1000P 1000w

 

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Did you reinstall the gpu drivers?

Main RIg Corsair Air 540, I7 8700k, ASUS ROG Strix Z370-H, G.Skill TridentZ 32GB, EVGA 1080TI SC Black, EVGA 850 GQ, Acer KG251Q 1920x1080@240hz 

 

Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer GD235hz 1920x1080@120hz

 

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multiple times.

i7-4930k - 2x Titan Blacks SLI - Asus X79 Deluxe - 4 x 8GB G.Skill Ripjaws - Silverstone ST1000P 1000w

 

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Well id go back one version of the bios then. Sounds like that's when it stated. 

I had this issue before but I would perform a clean install of the drivers and it would be fine.

Main RIg Corsair Air 540, I7 8700k, ASUS ROG Strix Z370-H, G.Skill TridentZ 32GB, EVGA 1080TI SC Black, EVGA 850 GQ, Acer KG251Q 1920x1080@240hz 

 

Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer GD235hz 1920x1080@120hz

 

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ok i figured it out. had to move the card one slot down to make it work. i guess the bios updated changed somethings around. also used a new bridge so its one of the two.

i7-4930k - 2x Titan Blacks SLI - Asus X79 Deluxe - 4 x 8GB G.Skill Ripjaws - Silverstone ST1000P 1000w

 

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