RTX 5080 PSU Cable question

Hi, so I have an rtx 5080 incoming and wanted to make sure I don't need a PSU upgrade.

I just realised that with my current set up I'm daisy chaining a 12pin to 2x PCIe slots on my RM850x (2021) when I shouldn't be as the card should go into 3 separate PCIe slots but my PSU has 2x only.

From the research I've done I think the below cable with solve my problem with my current card and the incoming 5080, the cards tdp is I believe 360 watts with a recommended 850 Watts of psu:

Corsair Premium 600W PCIe 5.0 / Gen 5 12VHPWR PSU Cable - Fits Type-4 PSUs via Dual 8-pin PCIe - 12+4pin Connector - Mesh Paracord Sleeving - Black

https://amzn.eu/d/b7GT15X

Could anyone confirm that should be ok and allow the use of a PSU with just 2x PCIe slots? Many thanks.