PCIe 5.1

Is a native 12V-2x6 PSU connection safer than a dual-8-pin-to-12V-2x6 cable?

I'm comparing Corsair SHIFT ATX 3.1/PCIe 5.1 power supplies. The RM850x and RM1000x SHIFT models appear to have a native 12V-2x6 socket rated for 600W, while the newer…