Based on this product's specifications, here are some alternatives and similar models
Power Supply Unit FSP VITA GM 850W
Summary description:
The FSP VITA GM 850W power supply unit features a total power of 850W, 80 PLUS Gold certification, and a 20+4 pin ATX connector. It supports AC input voltage of 100-240V and frequency of 50/60Hz. With a 60 cm motherboard power cable and 500 mm SATA power cable, it is designed for PCs. The active cooling system with a 12 cm fan ensures efficient operation.