https://www.amd.com/zh-hans/prod ... d-radeon-rx-7900xtx
Minimum PSU Recommendation(建议最低电源功率):800w
Recommended power supply for AMD Radeon RX 7900 XTX graphics card is minimum800W or greater power supply with 12V output > 65A. Minimum recommended systempower supply wattage is based on a PC configured with an AMD Ryzen 9 5900x processor plus typical power requirements of other system components. Your systemrequirements may differ. GD-223.