Seasonic has recently updated their wattage calculator tool to include the unreleased AMD Radeon RX 7000 series however it is currently unknown if the power information comes directly from AMD. The RX 7900 XT and 7800 XT are both listed as requiring a 750 W power while for the RX 7700 XT a 650 W supply is recommended with these values all aligning with those of the corresponding Radeon RX 6000 models. The RDNA 3 architecture of these new graphics cards is expected to increase performance by up to 40% according to recent leaks with AMD confirming they are targeting a 50% performance/watt increase over RDNA 2.
View at TechPowerUp Main Site | Source
View at TechPowerUp Main Site | Source