TechPowerUp reviewed the NVIDIA RTX 4090: 450 W vs 600 W 12VHPWR
A quote from the article:
NVIDIA’s GeForce RTX 4090 requires between 400 and 600 W of power. We pair it with a Seasonic VERTEX GX-1200 to determine whether there is any difference in performance or stability between 450 W and 600 W 12VHPWR connectors.NVIDIA RTX 4090: 450 W vs 600 W 12VHPWR Review