This rumor evokes a monstrous card based on the Ada Lovelace architecture. It would be the top of this range but at this moment impossible to say if we are talking about a possible 4090Ti or a Titan. However, Nvidia could power this monstrous RTX with two 16-pin power connectors for a TDP of 900W.
So far the speculations about the TDP of the next RTXs have changed a lot but the numbers have been refined lately. Several sources seem to confirm that the most powerful RTX 40 to be launched this year will have a TDP of 600W. This could be an RTX 4090 since a possible Ti version doesn’t usually arrive a few months after the release of a new generation. The hypothesis of a Titan is clearly not to be ruled out because in its information, Kopite7kimi mentions a card configuration with 48GB of GDDR6X memory at 24 Gbps. Regarding the rest of the range, the latest information seems to indicate that all cards could benefit from an increase in memory capacity. Thus a future 4080 would now be equipped with 16GB (so an increase of 4 to 6GB, depending on the model RTX 3080). Regarding the 4070, they would gain 4 GB more (from 8 GB to 12 GB).
The flow of information should accelerate regarding this next generation of cards which could be announced before the summer and launched around the end of September.
