We won't spend too much time on SLI: it simply does not work. The same goes for CrossFire. These days, both game developers and AMD and Nvidia themselves do not seem to prioritize multi-GPU implementations, so we're not sure who to blame.
|Framerate in fps||GTX 1080 Ti||GTX 1080 Ti SLI||Difference|
|Ultra HD medium||122 fps||121 fps||-0.8%|
|Ultra HD ultra||72 fps||70 fps||-2.9%|