Another thing to consider with regards to RAM size is that at the start of the current generation, the fastest GPU's available were sporting only 2 and 3GB vs the consoles 8. 10GB vs the new consoles 16GB is far better.
Shared pool for the consoles though, about 10 for next gen, about 2/3 for current base consoles.
Over 30TF for the 3080 it seems.