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.
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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.