First GPUs Implementing GDDR7 Memory Could Stick with 16 Gbit Chips, 24 Gbit Possible
 

Some of the first gaming GPUs that implement the next-generation GDDR7 memory standard, will stick to 16 Gbit memory chip densities (2 GB), according to kopite7kimi, a reliable source with NVIDIA GeForce leaks. 16 Gbit is what is standard for the current RTX 40-series graphics cards, which ensures that a GPU with 256-bit memory bus gets 16 GB of video memory; the ones with 192-bit get 12 GB; and the ones with 128-bit get 8 GB. The flagship RTX 4090 uses twelve of these chips over its 384-bit memory bus for 24 GB.

https://www.techpowerup.com/320058/f...-gbit-possible