guanyu210379 :
3x1080p is about 75% the pixel amount of 4k.
You would need a GTX1080Ti for best result.
GTX1080 is than the minimum, do not go lower.
Sorry for being late, but actually, if you have triple 1080p monitors, the performance will only go down about 30% than if you were using 1 1080p monitor, nvidia surround and amd eyefinity only increase the pov, and most games render EVERYTHING around you, not your field of view, so like i said there wont be that big of a performance hit, sorry man, do research before you comment, also i had a gtx 1060 and i ran everything fine on triple 1080p hight/ultra settings