Isn't this how it works today already? Granted you wanted to run it on RAM rather than VRAM.
According to the article/Samsung RAM dies inside can support way higher bandwidth than they expose, they're limited by external interface / bus width:
> Together, they can utilize the chip’s internal bandwidth across all 16 banks, which comes out to 614 GB/s. For comparison, regular DRAM accesses can hit two banks in parallel and max out at 76.8 GB/s.
And that's just for single 64-bit IC. So way faster and more power efficient.
Consumer platforms have been stuck at dual channel for decades; most of it I attribute to intentional product segmentation. I'm hoping that LLMs might change eventually for an upcoming consumer platforms; going to 4 channel would be really nice.