Current 4 way SLI challenges: titles using Ray Tracing (on FULL or ULTRA and get over 60fps at 4k with max eye candy, max lighting, max shadows, max textures, max AF (and no crappy blurfest DLSS, no DoF, and no Motion Blur, AA set to SMAA or TXAA or less) for MAX image quality and resolution. SOTTR (only does shadows), METRO, and Control Why? Because ray tracing (as sold by nvidia) sucks and can't really run max and 4k (designed at best for 1920x1080). The Titan RTX (had a pair) runs slower than the Titan V and in ray tracing it takes a nose dive compared to the V. Although, to be fair, the Titan V uses HBM2 and has a mem bus of 4096. So 4 way sli gets it well up and over the 60fps mark, but I've had challenges and I'm venturing all alone here (for now).