>>380517029
any 4xxx series card will most likely be overkill, the only gpu metric that matters is the amount of vram, so you can load everybody's brainlet 25+mb 4/8k texture avatar without getting hitching from unity being forced to swap data to ram
you WILL be cpu bound most of the time
focus more on what cpu you should be getting, the 5800x3d looks promising but I haven't seen any vr benchmarks on it, but its single thread performance is king which vrc favors heavily
having 3600mhz (having more than that you will worry about amd cpu binning quality since going more than 1800mhz on its IFC, but if you can manage to go higher then more power to you) RAM with low CL (16 is a good number, any lower is rare and once again having higher quality binned ram will allow its timings to get timer, thus more cpu perfomance)
tl;dr gpu doesn't matter much past a 1080ti, cpu is significantly more important, buy a cpu with high single threaded performance and above-average RAM