Undying:

So 192bit - 12GB gddr6? I would rather see 256bit bus with 16gb for 4070.

Issue for nvidia is that they would then more or less need to give the 4080 24gb, as it would look quite bad if the 4070 got 16gb, and the 4080 only got 12gb. But yes, the 4070 needs to be 256 bit - minimum. Another possibility is that nvidia gives the 4070 a 320 bit bus, and the 4080 a 384 bit bus. Then the 4070 gets 10gb vram and the 4080 gets 12gb vram. I would honestly consider this the more "likely" option.

Dragam1337:

Issue for nvidia is that they would then more or less need to give the 4080 24gb, as it would look quite bad if the 4070 got 16gb, and the 4080 only got 12gb. But yes, the 4070 needs to be 256 bit - minimum. Another possibility is that nvidia gives the 4070 a 320 bit bus, and the 4080 a 384 bit bus. Then the 4070 gets 10gb vram and the 4080 gets 12gb vram. I would honestly consider this the more "likely" option.

I've seen nvidia supposed to be doing something similar to amd and their infinity cache. So 4070 with 192bit and 64mb cache could compensate for the lack of bandwidth. https://www.techpowerup.com/292529/nvidia-increases-caches-for-ada-lovelace-to-catch-up-with-amd

Undying:

I've seen nvidia supposed to be doing something similar to amd and their infinity cache. So 4070 with 192bit and 64mb cache could compensate for the lack of bandwidth. https://www.techpowerup.com/292529/nvidia-increases-caches-for-ada-lovelace-to-catch-up-with-amd

That doesnt really help at higher resolutions though (as seen with amd 6000 series vs nvidia 3000 series). But sure, a bigger cache to increase max fps at lower resolutions is probably smart.