980 does work with VR, but not ACC. It was the first card to be certified for the Vive
SLI with VR can be made to work with twin RTX2080 or twin RTX2080ti using a NVLink-HB (not the typical SLI bridge) and a bit of options hacking. I've set mine to render not one but two frames and forcing AFR. This will show SLI usage across the two cards for VR. Taking the frame-rate on ACC up from 53 to 90ish. Locking the framerate at 90 for the original VIVE is a good idea. I could never get PhysX to work with ACC, though.
I mostly use these cards for AI/ML, so the NVLInk-HB (which is really for Quadros) is something peculiar to me and those who know the hacky work-around. The standard NVLink bridge won't work, it needs the HB model.