First, a bit of context. It has been rumored for some time that NVIDIA’s next-generation graphics cards for gamers after Ampere, known as Ada Lovelace, will be ludicrously power-hungry—to the tune of some 600 Watts. As an aside, AMD’s RDNA 3-based Navi 30-series GPUs are expected to be quite thirsty as well.
These rumors were lent credence
Source: Hot Hardware – Rumor Has It That GeForce RTX 3090 Ti Cards Are Also Test Vehicles For Ada Lovelace GPUs