One more thing i will recommend! I would pick up one of these: https://www.amazon.com/Corsair-Premium-600W-12VHPWR-Cable/dp/B0BLY1B362/ref=sr_1_3?keywords=corsair+12vhpwr+cable&qid=1686251867&s=electronics&sprefix=corsair+12%2Celectronics%2C136&sr=1-3
otherwise you wont be able to close the case once you put the GPU in. The cable the card comes with is very stiff and hard to work with.
Corsair sells those 12vhpwr cables
Thanks mate. Does this look right? https://www.amazon.com/Corsair-Premium-600W-12VHPWR-Cable/dp/B0BLY1B362 . If my research is correct the RMx should be a type 4 power supply. Any "gotchas" I should have awareness of? I have half a mind just to replace with a 1600 watt supply but don't want to go through the pain of routing all the cables and tidying everything up again.
I do not see the connector for 4090 there. Here is the cable: https://www.amazon.com/Corsair-Premium-600W-12VHPWR-Cable/dp/B0BLY1B362
More info: https://www.reddit.com/r/sffpc/comments/10w857b/lian\_li\_sp850\_and\_corsair\_600w\_12vhpwr\_cable/