Very nice, might I suggest you order one of these for your PSU if you're still using the Corsair 1000w unit?
https://www.corsair.com/us/en/Categories/Products/Accessories-%7C-Parts/PC-Components/Power-Supplies/600W-PCIe-5-0-12VHPWR-Type-4-PSU-Power-Cable/p/CP-8920284 That'll go miles in helping tame the spaghetti monster that the adapter creates. It'll also give you the ability to increase your power limit on the card as well as use alternate BIOS with higher power limits to play around with. I use the "silent" BIOS as my tinker BIOS and have just settled on using the BIOS from the MSI Suprim X. It gives the card a native 480w target and lets you increase it to 520w via the slider if you wish.
This is the BIOS here if you're interested:
https://www.techpowerup.com/vgabios/249756/msi-rtx4090-24576-220920-3 I tried some of the 600w BIOS like the Gigabyte Gaming OC or the ASUS Strix versions and saw really no increase in performance as the card just can't really get much past 3Ghz core regardless of power limit on the stock cooler. With the MSI Suprim X BIOS the card will run 3015-3045Mhz if you set the core offset to +180. Though for daily gaming I leave the power slider at 100% (480w on this BIOS) and just use a +100 offset which nets me a boost clock of 2850Mhz in games and power draw stays in the 400-450w range depending on the game.