Even if Corsair sells 12VHPWR cable with 600W support and their help pages confirm support for RTX 40 series, they don’t mention the 600W support in the PSU spec page, there’s no manual on the webpages supporting that claim and the box says this: ATX3.0 PCIe 5.0 <=450W, but you only notice it when the product arrives at home. https://i.ibb.co/GHVzpS1/corsair.png

What I’m missing here? Should I return it? There’s 0 information about the compliance of ATX 3.0 tighter specs like Power Excursions or transients.

To me, still looks like the same HX1000i ATX 2.4 compliant with a PCIe 5.0 12VHPWR cable inside.