Articles on: 12VHPWR & 12V-2X6What is the minimum PSU requirement for RTX 4090?NVIDIA has released the below minimum PSU requirements: GPU PSU TGP MIN. PSU WATTAGE GeForce RTX 4090 450W 850W GeForce RTX 4080 16GB 320W 750W GeForce RTX 4080 126GB 285W 700W Updated on: 26/10/2022