sli not working

Apuu2011

Prominent
Apr 3, 2017
9
0
510
hello everyone got a problem with my gpus. Recently got 2 1080ti, both of them work fine if I put one at a time in pcie1. If I put the second gpu in the pcie2 or 3 my motherboard recognizes the gpu(already checked in bios in the gpui section and all green, all pcie seems to work fine) but when I go in Nvidia control panel does not find the second gpu and does not allow me to sli.
Here is my build:
monitor: samsung 4k 60 hz
cpu: i7 6700k clocked to 4.4 ghz
ram: 16gb 2x sticks of 3200 mhz
gpu: 2x gtx 1080 ti
motherboard: asus gtx z170-a
cpu cooler: deepcool captain 240
fans : 4x 120mm , 1x 250mm
storage: 2x 500gb ssd, 1x 2tb hdd
phanteks enthoo luxe case
keyboard razer blackwidow chroma v2
mouse Logitech mx master
power supply: corsair 1200 watts.
 

just uninstalled driver with ddu, gonna install it again and see if this fixes the situation. will let you know on that in about 15 mins.
 

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