YouTube/Just Josh made a dedicated video about this on his main channel: "RTX 5070 12GB Spotted... Why isn't Nvidia talking about this?" [youtube.com/watch?v=aYIzJWgsSLE].
For the desktop I'd like to see a 5070 SUPER 18 GB VRAM and a 5070 Ti SUPER 24 GB VRAM. It's still not too late for NGREEDIA to cash in on the old TSMC 4N / N4 (which really is TSMC' 5N node). Of course, then the RTX 60 series would still have the same VRAM amount as the SUPER using the 3 GB dense memory chips and there would be less incentive for people, who would've gotten the RTX 50 SUPER, up upgrade, aside from the approx. 30 % energy efficiency improvement and the usual artificially-limited-to-RTX-60-series DLSS software features.
In the DLSS 5 presentation NVIDIA used 2 5090 (2*32GB VRAM). This may imply that the VRAM requirement for DLSS 5 is going to be quite high. No wonder this news may be true. As the saying goes: There is no free lunch.
en.wikipedia.org/wiki/GeForce_RTX_50_series#Mobile RTX 5050, 5060 and 5070 have a 128-bit bus width. It does make most sense to connect the 3 GB dense chips to the fastest 128-bit GPU chip (5070).
3dmark.com/search - Steel Nomad: 5070 Laptop (8 GB VRAM, 128-bit bus width): Average score: 2985 5070 desktop (12 GB VRAM, 192-bit bus width): Average score: 5304
While the current 12 GB VRAM gaming laptops use the bigger, faster and more expensive 192-bit GB205 GPU, many games at settings where 8 GB VRAM becomes the limit, would run much better, if 12 GB VRAM was available.
Laptops using the 192-bit GB205 GPU are most of the time big, heavy, and expensive. The ones with the smaller chassis are even more expensive and may still have a loud(er) fan (because the chassis is smaller) and/or higher temperatures (there's no free launch).
128-bit/32-bit per GDDR7 chip = 4 GDDR7 chips, each 2 GB = 8 GB VRAM (current). 192-bit/32-bit per GDDR7 chip = 6 GDDR7 chips, each 2 GB = 12 GB VRAM (current). 128-bit/32-bit per GDDR7 chip = 4 GDDR7 chips, each 3 GB = 12 GB VRAM (new). 5090 MaxQ (=300W TDP) 48 GB VRAM desktop GPU using 3 GB chips when, tho? Asking the real questions.
Lenovo has revealed details of four new Nvidia GeForce RTX 5070 12GB gaming laptops. At the same time, MSI is preparing to offer the same laptop GPU paired with Intel's new Core Ultra 7 251HX processor.
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