Nvidia's rumored RTX 5080 Super could feature 24GB of VRAM - could it be enough to match the RTX 4090's performance?

https://www.techradar.com/computing/gpu/nvidias-rumored-rtx-5080-super-could-feature-24gb-of-vram-could-it-be-enough-to-match-the-rtx-4090s-performance