I have two RVZ03s, an old RGB, and newer ARGB version. I was able to fit a Zotac 2080 ti AMP which is a long 2.5 (almost 3) slot card with dimensions 308mm x 113mm x 57mm (12.13in x 4.45in x 2.24in). The 2x slim 15mm fans the case comes with still fit too.
Cooler clearance is right, a NH-L12S...