These GPUs are expected to replace the current-gen GeForce RTX 30 Ampere family.
To start with, the RTX 4090 is expected to take a big leap in performance.
It is not possible for a card with 8GB of GDDR6X VRAM to have a 192-bit bus.
Instead, it should instead be 128 bits wide.
Stay tuned for more updates!
source: www.techworm.net