Articles on: 12VHPWR ATX 3.0 PCIE 5.0What is the minimum PSU requirement for RTX 4090?NVIDIA has released the below minimum PSU requirements:GPUPSU TGPMIN. PSU WATTAGEGeForce RTX 4090450W850WGeForce RTX 4080 16GB320W750WGeForce RTX 4080 126GB285W700WUpdated on: 26/10/2022