https://wccftech.com/nvidia-geforce-rtx-40-series-to-feature-5nm-ada-lovelace-gpus-rumor/

NVIDIA GeForce RTX 40 Series graphics cards will be powered by the next-generation 5nm Ada Lovelace GPUs if the latest rumor from Greymon55 is to be believed. The leaker has been very active and has posted several details regarding next-gen GPUs from AMD and NVIDIA on Twitter and the latest ones are regarding NVIDIA's Gaming GPU lineup.

Greymon55 states that NVIDIA will be launching its GeForce RTX 40 series graphics cards based on the Ada Lovelace GPU architecture. The Ada Lovelace GPUs will be replacing the Ampere lineup and will be based on TSMC's 5nm process node. Unlike AMD's RDNA 3 lineup, the GPUs will stick with a monolithic design and while TSMC's 5nm is stated, we don't know if it is the standard N5 or the N5P node that will be utilized. But that remains to be seen till the first chips are taped out & that doesn't seem so far from now.