Just as a note on the "is it any good for Corona?" - the graphics card makes almost no difference to Corona at all, except for whether or not you can run the NVIDIA AI Denoiser (which is mostly just for when using IR). When it comes to the denoiser, even my old 980 Ti does fine :)
The only other issue with the graphics card is how well it handles the host software (Max / C4D) viewport.