It's worth noting that Nvidia doesn't really sell graphics cards - just GPUs. Yes, I know that they have their own models (Founder's Edition) but they're made by an external company, paid by Nvidia to do so (e.g. Palit). All chips go through a binning process after fabrication and packaging, and Nvidia will then be able to keep a specific selection for themselves, and then sell the rest.
With the latter, AIB partners essentially can choose to purchase trays containing hundreds of chips, with each tray being labeled and priced according to the results from the binning process. So for 4070 Ti models, there will be a 'base level' tray containing chips that meet the minimum specification but with fairly narrow clock windows. These will be the cheapest to purchase but are only suitable for the standard 4070 Ti SKUs. The top-end overclocked ones will require chips from more expensive trays.
Given that Nvidia will sell just the one 4070 Ti model, and the likes of Asus, Colorful, Gainward, Galax, Gigabyte, Inno3D, MSI, Palit, PNY, Zotac, etc will sell multiple versions, the majority of Nvidia's margins will come from the sale of the GPUs themselves. Jon Peddie Research reported that AIB partners experience very low margins
, less than 10% these days. For example, in 2021, Asus reported
revenues of $535 million for an operating income of $45 million (8.4% margin), and that's across its entire product lineup (which is enormous!).
For the same period, Nvidia reported
revenues of $15868 million in its graphics division for an operating income of $8492 million (54%), with $12492 million coming from the gaming sector. So with the majority of that coming from the sales of GPUs to AIB partners, Nvidia probably has a margin of around 65% on those chips.