The bigger note here is that NVIDIA will be using Micron's new GDDR6X memory that is clocked at a huge 24Gbps, up from the 19.5Gbps on the RTX 3090.

The new AD102 GPU would have a 384-bit memory bus, so we should expect 1152GB/sec of memory bandwidth -- an increase of 23% over the 19.5Gbps on the GDDR6X memory used on the RTX 3090 (and its 936GB/sec of memory bandwidth).

As for Micron's much-faster GDDR6X memory clocked at 24Gbps, that's something I reported on a year ago now, with Micron announcing that it would have 16Gb GDDR6X memory in 2021 that would be reaching 24Gbps.

Micron explained in August 2020: "Micron's roadmap also highlights the potential for a 16Gb GDDR6X in 2021 with the ability to reach up to 24Gb/s.