The Seasonic official website has accidentally or intentionally revealed AMD’s Radeon RX 7900 XT, Radeon RX 7800 XT and Radeon RX 7700 XT power supply. On Seasonic’s website, there’s a wattage calculator used to estimate PC power requirements.
And from the wattage calculation on the website, the AMD Radeon RX 7900 XT and Radeon RX 7800 XT need a minimum 750W power supply, while the midrange Radeon RX 7700 XT proposes a 650W power supply.
Nevertheless, the related information may be for citation only, because the RX 7000 series graphics cards have not yet been published by AMD. Likewise, this could also mean that the next-gen Radeon RX 7000 series would not use the 16-pin power connector like the NVIDIA RTX 40 series.